Anybody had this code before need help ASAP so I changed the front of the engine o2 sensor wasn’t that also changed the pcv wasn’t that what else could it be?

 

check engine light P0171 Anybody had this code before need help ASAP so I changed the front of the engine o2 sensor wasn’t that also changed the pcv wasn’t that what else could it be?[/QUOTE]

 

https://www.google.com/search?client...zine.com+p0171 Google is your friend

 

Well first thing is that P0171 is for a bank 1 sensor 1, which is upstream rear sensor. Before the cat, rear of the engine.

 

Yeah, it sounds like you just changed the wrong sensor. Bank 1 sensor 1 isn't too hard to get to, just need to remove the front strut bar

 

as mentioned before bank 1 is the rear bank. bank 2 is the front. sounds like you just changed the wrong sensor, try replacing the rear sensor. very highly doubt it but make sure the pins on the connector side of harness aren't corroded or deformed.