downstream O2 sensor part number
#2
Your downstream sensor is not part of that code. Downstream just measures cat health and doesn't affect fuel trim. Sure your upstream O2 may be bad, but no guarantee that replacing it will fix your issue. The code is telling you that the upstream is reading too much oxygen in the exhaust gases, hinting at a possible leak someone whether it be intake or exhaust.
Thread
Thread Starter
Forum
Replies
Last Post
Zeb
Volvo S60 & V60
0
10-30-2019 10:07 PM