Can Bank 2 issues cause Bank 1 code?
Thread Starter
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
Can Bank 2 issues cause Bank 1 code? I have a too lean Bank 1 (dirvers side) code (PO171).
I have gone over the Bank 1 side to look for exhaust/intake leaks, loose plug wires, PVC issues, replaced front O2, etc. Although I gained all the power I lost before the issue, the too lean Bank 1 code was thrown again after the car was driven a few times and the car still stumbles when warm.
Can Bank 2 (passenger side) issues cause a too lean code in Bank 1?
I have gone over the Bank 1 side to look for exhaust/intake leaks, loose plug wires, PVC issues, replaced front O2, etc. Although I gained all the power I lost before the issue, the too lean Bank 1 code was thrown again after the car was driven a few times and the car still stumbles when warm.
Can Bank 2 (passenger side) issues cause a too lean code in Bank 1?
