xanthefin wrote: ↑21 Oct 2024, 06:59 I want just shortly share. Not all codes trigger MIL/Check Engine light. And Yes most likely fault code is related.

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Thank You,

That's puzzling that the P0422 is stored. Did you reset the codes after replacing the oxygen sensors? Thank you, This Odd-yssey began with the failure of the Secondary Air Pump. That threw the CEL. After it was replaced the mechanic reset the SEL. I could not get all of the sensors to reset so I re...

Thank you for your reply. a/c was off, and I did not exceed 60 mph during the drive. I did notice something else. Using the bluetooth connection on the OBD-II reader unit I discovered a stored code PO422 (bad catalytic converter). Oddly, I do not have a check engine light along with that code. (Yes,...

1996 Volvo 850 GLT Wagon with Manual transmission. I have a problem with the drive cycles. None of the sensors want to go into the ready position after installing new Bosch O2 sensors and 3 complete multi-step cycles. (This is quite confusing, because prior to replacing the O2 sensors most of the ot...