Hogan Empathy Scale Questionnaire Pdf, Articles F

He also arrived 15 minutes early and had prepared for the visit by contacting me the day prior to get further clarification. The Fuel Rail Pressure (FRP) Sensor is a diaphragm strain gauge device. Please watch: "TESTING L9929 IC PINOUTS ON BENCH | Ecm Repair Class 21 | ECMrepair inhindi | A To Z Automobiles" https://www.youtube.com/watch?v=FkCZGwnBMlA. The fastest way of fixing the P0190 trouble code is by checking the fuel rail pressure sensor's electrical circuit. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. How do you bypass a fuel rail pressure sensor? And hopefully i was able to help you !! MK7 , 2.2 or 2.4 TDCI , Euro 4 , 06 to 61 plate , so mid to late 2006 up till the end of 2011. WHERE IS THE FUEL PRESSURE SENSORIf you have Ford and you are trying to find where the fuel pressure sensor is located w. AboutPressCopyrightContact. A fuel rail pressure sensor is a component which has the ability to reduce evaporative emissions by allowing the engine just enough fuel so that it can run in the correct way. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. If the fuel rail pressure sensor is giving inconsistent readings, the power control module (PCM) will store the P0191 trouble code. Another symptom you can notice is a different fuel consumption than you are used to having. Jiffy Lube Vs. Valvoline Oil Change: Differences & Which Is Better? A faulty fuel rail sensor may send an inaccurate signal to the computer which may cause the engine to experience hard starting. Diesel Pressure Sensor TestingAmazon Printed Bookshttps://www.createspace.com/3786463Amazon Kindle Editionhttp://www.amazon.com/Diesel-Common-Injection-Automotive-ebook/dp/B00760D04U/ref=sr_1_2?s=digital-text\u0026ie=UTF8\u0026qid=1360015278\u0026sr=1-2\u0026keywords=diesel+injection%2C+mandy+concepcionAndroid APPshttps://play.google.com/store/apps/details?id=com.app.book.AOTOTCCBNDTAEVFWAM\u0026feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHAuYm9vay5BT1RPVENDQk5EVEFFVkZXQU0iXQ..Explains how to test the diesel injection fuel pressure sensor. Electrical tests of the rail pressure sensor The pressure sensors are either analog or digital and usually made upon one of these sensing elements strain gauges a variable capacitance a piezo crystal (resistive/voltage based) I have a 07 ford f150 5.4 with a p0193 code. Four Seasons A/C System Switch P/N:36646. 6.4L High Pressure Common Rail Basic Information. FORD FUEL PRESSURE SENSOR LOCATION. How can you tell if a fuel pressure sensor is bad? Information given in this video does not guarantee the desired outcome. Service Agreement Program What Is It & Is It Legit? These codes will be displayed with a description string while using the scan tool. It means that the signal is above the pre-calibrated limit for a pre-calibrated time made by the manufacturers. Flat rate pricing based on labor time and parts, Trusted mechanics, rated by thousands of happy car owners, Hand-picked, community-rated professionals, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance. Thanks for sharing may God increase your knowledge and wealth. Kanstantsin arrived early. Replace sensor if faulty. All Rights Reserved. . I have about 298,000 miles on the vehicle. The sensors output is usually given as an analog voltage value proportional to the physical pressure. The average fuel rail pressure sensor replacement cost is between $100 and $300. This is why all modern engines have pressure sensors on their fuel rails, which give away this vital information. This includes the sensor itself, its connector, and the wiring that goes to the ECU. It helps compensate fuel pressure on acceleration . The P0191 trouble code is considered serious as it is known to cause drivability issues. Improper supply of fuel to the engine will cause an unexpected stall. They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance., YourMechanic will come to wherever your car is to perform any of a wide variety of car maintenance and repair services, and will charge you less than you'd normally pay if you were to drop your car off at a garage., "YourMechanic will fix your car at your garage at a fixed hourly rate much lower than their brick-and-mortar counterparts.". While JL's Auto Solution tries to keep the information up-to-date and correct, there are no representations or warranties, expressed or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the information, products, services, or related graphics contained in this Video for any purpose. The rear intake vac connection is not drilled after 04 , it is so . The most popular service booked by readers of this article is Fuel System Inspection. You shoul see close to 5 volts and zero volts respectively. If right after the power surge happened and now you have a code for the fuel pressure and the P2271 trouble code definition O2 Sensor Signal Stuck Rich Bank 1 Sensor 2 What the P2271 code means This code indicates the What What the P3427 code means When starting, and when the vehicle is operating under heavy weight, the engine will operate in V8 mode. The information is only given to help for fault diagnosis. costs, Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance. To clear the P0193 trouble code, start by determining what triggered it in the first place. But first, you'll start your tests with a quick preliminary check: 1. If you do not have the knowledge or do not have the right tools, you may have difficulty following this guide. A fuel pressure sensor is a pressure sensor that measures the pressure of the fuel in a vehicle's fuel tank. I hope the videos helpful for you!And Thank you for viewing!Have a great dayYou cant really break it if its already broken! Please subscribe!!! Is It Safe to Drive with the Check Engine Light On? A faulty rail sensor may upset the air fuel ratio and cause the vehicle to experience performance issues such as a decrease in power, acceleration, and fuel efficiency, and in some cases may even experience stalling. Certified Automotive Diagnostic Technician. The pressure sensors are either analog or digital and usually made upon one of these sensing elements. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. 8 Reasons Why Your Car Engine Is Sputtering And How To Fix It, 3 Symptoms Of A Bad Tire Pressure Sensor and Replacement Cost, P0190 Code - What It Means and How To Fix It, Symptoms Of A Bad Airbag Sensor and Replacement Cost, 8 Symptoms Of A Bad Fuel Pump and Replacement Cost, 8 Symptoms Of A Bad Fuel Injector and Replacement Cost, 5 Symptoms Of A Bad Fuel Pump Relay and Replacement Cost, 15 Different Types of Sensors in a Car and Their Functions, 4 Symptoms Of A Bad Steering Angle Sensor and Replacement Cost, 7 Signs Of A Bad Intake Air Temp Sensor and Replacement Cost, Car Wont Accelerate But RPMs Go Up: Causes & Fixes. for $114.99 The ECU then decides on the correct fuel supply measure. The fuel rail is responsible for the supply of fuel to the fuel injectors. I also have no codes. In most cases, this will be an electrical issue with the fuel rail pressure sensor or its wiring. The prices include labor and parts costs but do not include diagnosis costs. The fuel pressure sensor ensures the pressure in the fuel rail is correct. It is important to take this code seriously and have it diagnosed and repaired as soon as possible. You can tell that your fuel pressure sensor is bad by seeing a check engine light on the dashboard. Not only that, if the fuel pressure sensor is faulty, it may output too little information to the ECU, which in turn may increase the amount of fuel being fed into the engine. If you try to accelerate, your engine will not have an efficient fuel supply, resulting in poor acceleration. Made with in Silicon Valley. I got a code P0191 for the fuel rail pressure and a code P0237 for turbocharger boost. No portions of the video can be copied and re-distributed in any shape or form without written approval from root 66 and or the Clay way Channell! The purpose of this is to confirm that the sensors circuitry is unimpaired. Here is a more detailed list of the signs of a bad or failing fuel rail pressure sensor to look for: As already mentioned, the fuel rail supplies the cylinders with the same fuel. Transit Power & Service Tips. 2. The statements expressed above are only for informational purposes and should be independently verified. Actually, some Ford models are equipped with sensors, in which the value of the pressure is expressed as a function of the signal frequency. Magnus is the owner and main author of Mechanicbase. Another symptom of a potential problem with the vehicles fuel rail sensor is engine performance issues. The sensor calculates the pressure and sends the data to the ECU. The fuel rail pressure sensor is located on the fuel rail, which is often located near or under the intake manifold. Your engine will not like this thing in the long run, though! He correctly diagnosed my vehicle by actually going under the hood, removing a section and running some sort of test that told him exactly what the problem was. This minute change in crystal size is used to trigger a small fuel chamber on and off. The fuel rail sensor, commonly referred to as the fuel pressure sensor, is an engine management component that is commonly found on diesel, and some gasoline injected vehicles. Injuries, electric shocks, burns and other life threatening hazards can be a result of an inappropriate action on the engine. PB blaster penetrating oilLisle toolsSnap-on toolsMatco ToolsDorman Products Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. Whats the location of the sensor? Follow the given steps sequentially to achieve the most accurate results. Actually, the used reference of the sensor could differ from the reference used by the pressure gauge and lead to false interpretation. Now made of plastic, fuel lines don't rust and hold up to 750 psi. And the corresponding sensor, which is usually the only electrical component on the fuel rail, will almost definitely be at its end. Operating a vehicle while this code is present could cause the car to stall out or hesitate while driving. In this video were gonna show you that we had a bad fuel pressure regulator and exactly how we determined that this vehicle was running poorly and smoking heavily so if you have a Ford Escape and you need to replace the fuel pressure regulator heres the video on how to do it I also get into what happens if you continually allow it to run poorly and keep driving it because it still running so I highly recommend you take care of this problem as soon as possible I hope the videos informative for you and you feel a little bit more comfortable about working on your own vehicle.You should watch the whole video . JavaScript is disabled. Leaking vacuum hoses to fuel pressure regulator, Clean fuel pressure sensor connector plugs, Replace fuel pressure regulator vacuum hoses. If your engine continues to run lean as a result of your bad fuel pressure sensor, you could run the risk of stalling while idling or in the middle of driving. 6.4L High Pressure Common Rail Basic Information. Signs of a failing fuel cap include the smell of gas, stripped threads, or a cracked cap. Uses a fuel pressure tester to make a determination as to whether there is a sensor problem or a fuel pressure problem. Measure the fuel pressure sensor using the measuring diagram from your repair manual for your specific car model. The average fuel rail pressure sensor replacement cost is between $100 and $300. The fuel pressure sensor is located in the fuel line near the fuel tank. This is a common occurrence. In some rare cases, it can be a problem with too high fuel pressure. It cut out on me and now can't get it started,but it fires up for a second or so then cuts out again. I believe that you have a brake hardware component coming out of place at times and scraping against a moving surface. By viewing content you are agreeing to these terms. I have checked the wire from the PCM to the connector at the FRPs and its ok. Back probed the wire to the PCM, no voltage. How Long Does a Fuel Injector O Ring Last? Symptoms of a Bad or Failing Manifold Absolute Pressure Sensor (MAP Sensor), Symptoms of a Bad or Failing Fuel Pump Shut Off Switch. Here is a quick list to check if you get a no start with fuel rail pressure below 1000 kpa. Volkswagen Jetta L5-2.5L - Fuel System Inspection - Indianapolis, Indiana, professional ,informative and knowledgeable, BMW X5 L6-3.0L - Fuel System - Rancho Palos Verdes, California. If your fuel pressure sensor goes bad, the first thing that will happen is that you check engine light will appear on your dashboard. A guide on how to diagnose & repair problems causing the P0193 trouble code. Get a fair and transparent estimate upfront, P0191 OBD-II Trouble Code: Fuel Rail Pressure Sensor Circuit Range/Performance, Get a quote and book an appointment online. You can bypass a fuel rail pressure sensor using ordinary LED test light. Check the fuel pressure on the rail with the engine off and the key on, with the engine running at idle, and the engine running at 2000 rpm. Please note that the contrary is not true. owners, Over 25,000 topics, from beginner tips to technical First, lets take a look at the signs to look for. Remove the connector plug from the fuel pressure sensor and check for any signs of corrosion. P0191 is a diagnostic trouble code (DTC) for "Fuel Rail Pressure Sensor Circuit Range/Performance". The P0191 (https://www.yourmechanic.com/article/p0191-obd-ii-trouble-code-fuel-rail-pressure-sensor-circuit-range-performance-by-jamahl-walker) (fuel rail pressure sensor circuit problem) may just be a symptom - it is reporting suspect fuel pressure on the rail. Presented using advanced software CG animation technology to help you understand. In some car models, you also have to reprogram the fuel pressure sensor and remove the trouble codes with a diagnostic tool after replacement. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive. I constantly make these videos that show you how to use your tools and show the techniques that we use in our auto repair shop every day. Please see our, Jeep Cherokee L4-2.4L - Car is shaking or vibrating Inspection - Houston, Texas, Ford Explorer - Car is not starting - Houston, Texas. Stalling. . Completes a test drive and uses the live data to determine whether the fuel pressure reading is normal. The P0193 code indicates that the engine control unit gets a too high signal from the fuel rail pressure sensor. The fuel gauge will no longer work if there is an application of reverse charge or corrosion. For 2002-2004 Ford Taurus Fuel Rail Pressure Sensor Connector Motorcraft 93269TQ. Amongst other stuff, I have tested the sensor on the fuel rail following this short vid; https://www.youtube.com/watch?v=85IP8eY1nXY Explained the issues he found and how he will fix it. In order to do proper diagnostics you will need a scan tool, preferably Ford IDS, and . But the actual fuel pressure might be too high, as well. Step 1: Disconnect The Sensor. Reason for car continually stalling can't be found by dealerships, Fuel gauge light and level indicator problems. I have Ford Figo Titanium 1.4 dura torque .but I am getting P0193 faulty code.how much the cost of this one.please suggest. However, you should refer to the manufacturers service manual, to do this comparison. Your email address will not be published. It measures the fuel pressure at the injectors. Wiring that is insufficiently connected or chafed, a faulty fuel pressure regulator or faulty fuel pump are things that are often missed when doing a diagnosis and completing a repair. Also, the pump has a "Fuel Pump Driver Module" in the trunk, on the driver's rear wheel well, inside the trunk. Love your professionalism, very punctual and quick. See further information here. P0452 OBD-II Trouble Code: Evaporative Emission Control System Pressure Sensor Low Input, OBD-II Trouble Code P0171 (excessively rich fuel system), OBD-II Trouble Code P0172 (excessively lean fuel system), Engine may cut off when the vehicle stops, Unusual smell emitting from the tail pipe, Trouble codes P0171 and/or P0172 stored in the power control module, Repairing any broken, frayed, or shorted wires that lead to the fuel pressure sensor, Repairing corroded connector to the fuel pressure sensor. Certified Automotive Diagnostic Technician. If the fuel pressure is normal, they will use an oscilloscope to test the connector and wiring of the fuel rail pressure sensor. I really think you have single handedly led me to my poor performance issue on my Audi's driveability. In order to do proper diagnostics you will need a scan tool, preferably Ford IDS, and . Repairs covered by 12-month/12,000-mile warranty. Last but not least, you can read the sensor values using the scan tool and look for variations. The fuel sending unit is the component in the fuel tank that the fuel pump is mounted to. Where is the fuel rail pressure sensor located? In most cases, when you experience the P0193 code, you will most likely only see the check engine light on your dashboard. FORD FUEL PRESSURE SENSOR LOCATION. On most engines, the fuel rail is somewhere on its intake side. Simply put, it sends this data to the ECU, which changes fuel pressure and injection timing as required. When the battery was arched, the power surge had went through the vehicle and caused some circuits to fail. In addition to these DTC, other manufacturer specific DTCs (P1XXX) can also pop-up. Do not Attempt!\r\r\rAMAZON ASSOCIATES DISCLOSURE\rAuto Repair Guys is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com\r\r*Disclaimer\rWe, Auto Repair Guys, are not responsible for property damage or injury incurred as a result of any of the information contained in this video. Usually a bad or failing fuel rail sensor will produce a few symptoms that can alert the driver to a potential issue. I replaced the FRP sensor and still have the code I have checked my wiring have 5 volts checked the ground everything checks out the engine actually is running good just lost some mpg. The FRP sensor nominal output varies between 0.5 and 4.5 volts, with 0.5 volts corresponding to 0 MPa (0 psi) gauge and 4.5 volts corresponding to 26 MPa (3771 psi) gauge. In this video I go through the process of verifying a bad fuel rail pressure sensor. Your email address will not be published. The fuel rail pressure sensor limits the ability for fuel to get left inside of the fuel line. My fuel pump is new. However, in some cases, the fuel rail pressure can actually be too high caused by a faulty fuel pressure regulator or the vacuum hoses to it. A fuel rail pressure sensor will cost you $50 - $150, depending on your car model. Compare reading at the fuel pressure gauge. The most common mistake when diagnosing the P0193 code is starting with fuel pressure related issues. The mechanism that ensures that the fuel rail is efficient is the fuel rail pressure sensor. Any suggestions pleae? The labor work costs 50$ to 150$, depending on the workshop. In some cases, the sensor is combined with a temperature sensor to form a four wire sensor. The high pressure fuel injection pump increases the fuel pressure up to 169.96 MPa (24,650 psi) and delivers fuel to the fuel rails through 2 high pressure lines, 1 per . You can absolutely save money by doing it yourself. Any action on the car and its consequences are under your sole responsability. If it stays still, it is most likely a faulty circuit to the sensor. You are suspecting the fuel rail pressure sensor to be faulty but you are still not sure? I say no voltage but i checked it with a test light. In most cases, the P0193 code is related to a faulty fuel pressure sensor signal caused by a faulty sensor. Was very courteous and professional. The rail pressure sensor is generally equipped with a capacitance or piezo crystal sensing element (second and third category), and should have three wires. (sometimes Im fun) So you can inform yourself with all the great information that I put in my videos and God bless. To test the fuel rail pressure sensor, you first need a multimeter. The amount of fuel injected into the engine during combustion is determined by two factors how long the fuel injector stays opened and at which pressure the fuel gets injected. The high pressure fuel injection pump increases the fuel pressure up to 169.96 MPa (24,650 psi) and delivers fuel to the fuel rails through 2 high pressure lines, 1 per . Find out more on this video. Here are the facts about the fuel-rail-pressure-sensor.1) The only reason why the Fuel Rail Pressure Sensor was developed was to make the Fuel-Pump last longer.2) Before the Fuel Rail Pressure Sensor was developed, the fuel pump was always woking at 100% load.3) Using the Fuel Rail Pressure Sensor, the fuel pump module regulates the pump's rotational speed, according to engine load.4) The Fuel-Pump module computer sends a Pulse-Width-Modulation signal to the fuel pump.5) At idle, the need for excess fuel is reduced, so the fuel pump's speed is reduced, with input from the Fuel Rail Pressure Sensor.6) The Fuel Rail Pressure Sensor has 3 wires, the sensor ground, 5 volt reference and the signal wire.7) The Fuel Rail Pressure Sensor is used on returnless fuel systems.8) A vacuum hose is used in the Fuel Rail Pressure Sensor to take engine vacuum into consideration when measuring the fuel pressure. Take your time and consider all of the possibilities before concluding that the fuel rail pressure sensor is faulty. One of the first symptoms of a potential problem with the fuel rail sensor is hard starting. This improves performance and efficiency while also reducing emissions and the amount of unburnt fuel. Pennzoil vs. Mobil 1 Oil: Differences & Which Is Better? Everything is purchased by us!\r\rThe video is meant for entertainment purposes only. In order to work effectively, the power control module must always know what the fuel pressure is. Open the hood and locate the fuel pressure regulator on one end of the fuel rail. Disclaimer: This site and the author are not responsible of any misuse of the provided information. YourMechanic All rights reserved. This is due to the newer smart vehicle ECMs and the rationality checks done on the Fuel Rail Pressure Sensor.Finally, if faced with a Fuel Rail Pressure Sensor code, first test the wiring as mentioned here. Except for the Ford 6.7 L Powerstroke, a low rail pressure reading, with no codes, will not cause a no start. In 05 they abandoned that rear vacuum connection and they put a wye on brake booster hose . TOYOTA SOARER LEXUS SC430 Genuine Quarter Belt Moulding RH 75671-24010 OEM, StopTech For 2001-2005 Mazda Miata Disc Brake Rotor Rear Right 126.45062SR. Check if the pressure value changes while you rev up. To optimally balance the air-fuel mixture for the best possible performance, the vehicles ECU needs to accurately know how high is the fuel pressure at any given moment. If the fuel pressure is greater than 35 psi, then Hi there. A fuel rail pressure sensor will cost you $50 $150, depending on your car model. As a result, you lose fuel and have to fill your cars tank more frequently. The electrical tests checking for short/open circuit are usually performed by the ECU (failure P0192, P0193, P01C0 and P01C1) , and you dont need to bother yourself checking them. It takes less pressure to flow fuel at high vacuum, idle, than at wide-open-throttle. There is almost nobody or few active FF members here who have connected an external fuel pressure gauge for test purposes. In most cases, the P0193 code will be caused by a faulty fuel rail pressure sensor or a broken wire. Get a fair & transparent quote instantly before booking. Manually check the fuel pressure and replace the fuel pressure regulator or vacuum hoses if the pressure is too high. This process works to reduce tailpipe emissions. The Check Engine Light can also be activated by a wide variety of other issues, so having the computer scanned for trouble codes is highly recommended. Toyota Corolla L4-1.6L - Fuel System Inspection - Sacramento, California. Technically, it can mean that either the fuel pressure is too high or there is a problem with the signal from the fuel rail pressure sensor. Castrol Edge vs. Mobil 1 Oil: Differences & Which Is Better? you would only be helping me . You have 2 separate problems here. It is a critical part of the fuel injection system in some vehicles. Do the same measurement towards the sensor from the engine control unit plug. To fix the P0193 code, youll first have to find out whats causing its signal to be too high, which is what this error means. 10) It is possible to test the Fuel Rail Pressure Sensor response signal, but such test is 99% of the time unnecessary. All our repairs are backed by our 12-month / 12,000-mile warranty. While fuel rail sensors are not found on all vehicles, to the ones they are found on, they play an important role in engine management functions. How Long Does an Engine Control Module (ECM) Last? 2023 A good fuel filler cap safely seals the fuel tank. The check engine light is an indication that something is going wrong in your engine that needs immediate attention. There could be a problem with the fuel pressure, though, which will cause performance issues with your engine. The Bosch Piezoelectric (crystal) injector operates using a crystal stack, usually Quartz, that changes size when energized. Part of our Diesel and electronic series shown here on this channel. P0213 OBD-II Trouble Code: Cold Start Injector 1 Malfunction, P2006 OBD-II Trouble Code: Intake Manifold Runner Control Stuck Closed Bank 1, P2240 OBD-II Trouble Code: O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1, P2271 OBD-II Trouble Code: O2 Sensor Signal Stuck Rich Bank 1 Sensor 2, P3427 OBD-II Trouble Code: Cylinder 4 Deactivation/Intake Valve Control Circuit Low, Black smoke and rich fuel the codes P0191 & P0452 and short trim bank 1 & 2. If you are still not sure where the sensor is located, the owner's manual should have information . 5-volt reference, ground and signal wire (pressure voltage signal), which sends the reading to the ECM / PCM. If this happens frequently, the fuel rail pressure sensor might not be working properly enough to send the correct information to the vehicles onboard computer. Two wires are used to supply the sensor and the third provides the measurements. You can also read the trouble codes yourself with an OBD2 scanner. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. The mechanic will use the OBD-II scanner to retrieve the freeze frame data to find out what the condition of the vehicle was when trouble code P0191 was set by the power control module (PCM). It determine if the sensor should be replaced. CATALOG:http://www.autodiagnosticsandpublishing.com/Software_Catalog.htmlFuel Rail Pressure Sensor Quick-FixThe Fuel Rail Pressure Sensor value is used by th. The appearance of these faults does not mean that the sensor is faulty and could be a result of a failure in the other elements of the sensor circuit (cables, ECU, ) or in the mechanical part of the injection system. The pressure control is usually a function of the engine load and speed. The piezoelectric effect states that when a crystal such a Quarts is squeezed an electric current is generated. Still, there is always a possibility the fuel pressure is actually too high. There may also be an increase in fuel consumption, which can be costly. This rail holds the fuel injectors in place. The most common symptoms of a bad fuel pressure sensor are difficulty starting your car and acheck engine lighton your dashboard. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Neither one did what I thought it should vs applied vacuum. Magnus you are awesome. The rail pressure sensor has a 3-wire connection. By the same token, when electricity is applied to the crystal is changes shape. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. He explained everything to me in detail on what I needed to know about my car. You can also check the values coming from it with a diagnostic scanner or by measuring it with a multimeter. It does share this5 volt ref with the power steering oil sensor. @Des My question is how would I know its my pcm causing my problem cause I have check replaced everything else. CATALOG:http://www.autodiagnosticsandpublishing.com/Software_Catalog.htmlFuel Rail Pressure Sensor Quick-FixThe Fuel Rail Pressure Sensor value is used by the ECM to control the Fuel-Pump rotational speed and injection. This light is triggered by the ECU, which detects the defective fuel rail pressure sensor and acts accordingly. The driver, the fuel rail pressure sensor, mass air, and the PCM control the speed of the pump motor, in relationship to throttle angle, as this is a return-less fuel injection system.