Code 337 EGR above max voltage.
Thread Starter
|
New User
Joined: Sep 2021
Posts: 5
Likes: 0
Code 337 EGR above max voltage.
My 94 f150 5.8 has check engine code 337, I have not been able to find much information as to what could be causing the EGR to read above max voltage. I did recently replace the egr tube, valve, and sensor as they were a rusted mess. Any advice on diagnosing the electrical system to find the source of the problem?
Thanks!
Thanks!
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
When is Code 337 displayed? Key On Engine Off (KOEO) tests, Continuous Memory or Key On Engine Running?
You should start with the KOEO tests and Stored Code display.
Also a good time to measure the EVP output with a meter (Key On Engine Off). EVP Sensor
You should start with the KOEO tests and Stored Code display.
Also a good time to measure the EVP output with a meter (Key On Engine Off). EVP Sensor
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
I just had the same code (in two digit) and after testing, it was the EVP sensor. If yours is bad make sure the gasket is in the EVP box . I had to get the STANDARD brand name EVP and the gasket included was a cheap thin O Ring. I reused my old flat gasket and all is well.
Thread
Thread Starter
Forum
Replies
Last Post
Ryan50hrl
1987 - 1996 F150 & Larger F-Series Trucks
4
Jun 2, 2005 09:49 PM
