I changed the fuel rail as a whole thinking it was the sensor. Do I have to bleed the fuel rail, if so how to bleed it? How to Fix Repairs for this error code are pretty simple and straightforward, and should be clear following a thorough diagnosis. Maybe I just saved you 200 bucks. If the actual fuel pressure is normal and the circuitry of the sensor is unimpaired, then that suggests a problem in the sensor. Need help with a P0191 code? Thanks for the info there are 108k miles on the truck and it idles and runs great. Thanks I have the exact same problem.
This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. On the costs, that's why I said that. Common Symptoms As with other error codes, this trouble code illuminates the check engine light. This will allow us to continue providing quality Cummins diesel information to everyone for free! I read some stuff about bad connections at the frp sensor I'm going to put some die electric gel on the pins and inspect that. The dirt could get to an injector and kill it. You don't want to introduce any dirt to the rail.
Everyone is very friendly and helpful just ask questions and everyone will help you out the best they can. This code can either be a mechanical or electrical problem, which largely depends on the manufacturer, fuel system or fuel type of the vehicle. I got a code p0191 for fuel performance code I cleared it and it takes weeks to a month if it comes on again. I've searched the forum on how to change the sensor but still have questions. Since the sensor is on top of the rail, there is no drainage. Basically, there is 2 things that can fail.
I am new to working on diesels so any help would be appreciated. What repairs can fix the P0191 code? If any fail then replace all 6 injectors. Common mistakes when diagnosing the P0191 code A common mistake when diagnosing the P0191 trouble code is overlooking the other components that may need to be repaired and replacing the fuel rail pressure sensor first. 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. Smart thing would be to wash the motor down especially around that plenum.
Com site you'll be able to interact with all the other members. Here is some of the different adblockers available that might be detected. Take your time and consider all of the possibilities before concluding that the fuel rail pressure sensor is faulty. Do I have to bleed the fuel rail, if so how to bleed it? It only came on twice and has been off for weeks now truck runs great ehat should fuel rail pressure be at an idle. Make sure you have a fresh washer seal for the sensor. Also, it can cause excessive fuel consumption. I've searched the forum on how to change the sensor but still have questions.
Parts for these trucks are too expensive to throw parts at it. Also, chaffed and insufficiently connected wiring, faulty fuel pressure regulator and fuel pump are often neglected when diagnosing and conducting repairs for this error code. Take the time right now and on the Mopar1973Man. Com this will open up many more options and functions on the website. How serious is the P0191 code?. The fitting on the sensor is a hex. Not something a novice should do Are you sure it's sensor? I have a stock 2010 2500 and recently got P0191 code.
I was guessing on the plug, but it's a good start. We pay our operational bills with advertising and donations. Can you get your hands on some silicone Dielectric Grease? If you have 100k or 150k miles or more then I highly suggest you pull all 6 injectors have then bench tested. An oscilloscope will be used to test the connectors and wirings of the fuel rail pressure sensor for vehicles with normal fuel pressure. Also, make sure you have the proper tools necessary for diagnosis.
What causes the P0191 code? Do you know what the frp reading and voltage reading is supposed to be at idle I think that's where the code would set. They usually come with the sensor. Then, they will take the vehicle for a test drive and look through the live data stream whether the reading for the fuel pressure is normal. Give it a minute or two. If there is a hex on the rail under the sensor, hold that with another wrench. No and No The rail pressure drops to zero almost immediately after shut down. We have detected that you are blocking our advertisers.