• Welcome to EcoDieselRam.com We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your EcoDiesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • We believe in quality OVER quantity, and a family friendly place for your #EcoDiesel home!
    CLICK HERE TO REGISTER! Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

P0191 CEL fuel rail pressure sensor

Tdecoursey

New Member
Apr 29, 2019
1
0
Truck Year
2016
I got this code yesterday on my 2016 ecodiesel. Anyone know where this is located. I heard just a good cleaning can resolve it with some dielectric spray.
 

John

Well-Known Member
Nov 13, 2015
1,186
386
Check your fuel filter. I never saw anything about cleaning the sensor.
 

cs in Alabama

Active Member
Feb 21, 2019
522
135
Truck Year
2015
Because it can be caused by excessively rich fuel mix, clean your MAP sensor if you are not running a tune. Then use your diagnostics box and clear the code and see if it comes back.

If not, here is a good history, (with pictures!). It looks like some dielectric grease on the sensor connections helped a few people out. But, not one guy whose computer lost its mind. I think TC Diesel helped him out because he did not re-post his issue. Only TC knows for sure!

https://www.ecodieselram.com/forum/...l-pressure-sensor-a-circuit-performance.1272/
 
Last edited:
Top