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Sep 21, 2022 | 12:00 PM

#1 (permalink)

djwease69@gmail.com

Thread Starter

Joined: Apr 2022

Posts: 1

Likes: 0

From: Florida

P0400, P0174, P0171 Codes

Started getting P0400, P0174, and P0171 codes at the same time. Codes can be cleared , but come right back. Car is running fine, no problems. Trying to alleviate buying a bunch of unneeded parts. Any ideas ? Thanks

Last edited by djwease69@gmail.com; Sep 21, 2022 at 12:13 PM.

Sep 23, 2022 | 08:10 AM

#2 (permalink)

zip439

Senior Member

Joined: Jul 2010

Posts: 2,281

Likes: 469

From: SE Alabama

Re: P0400, P0174, P0171 Codes

Quote:

Originally Posted by djwease69@gmail.com

P0400 (Exhaust Recirculation Valve) could be the cause of the P0174 and the P0171 codes. Investigate the functioning of your EGR valve first.
Use the search book in the upper right corner of this forum and the google option. Type in "documentation" and you can find the service manual for free download.

Last edited by zip439; Sep 23, 2022 at 08:14 AM.