P0422 Diagnostic Trouble Code Discussion for April 2017
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2001 Volvo S60 2.4T 2.4L MIL Lamp on VIN: YV1RS58D71 P0422: catalyst efficiency below threshold. I suspect this vehicle needs a factory cat, but, as many customers are, they are reluctant to buy a factory unit. Post replacement of cat I have now twice verified proper o2 sensor operation and weeks later it sets the same code. Went to dealer for flash updat... |
April 04, 2017 |
