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P0422 Diagnostic Trouble Code Discussion for April 2006

Catalyst Efficiency Below Normal (Bank 1)

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Trouble Ticket Help Requests for DTC P0422
Help Request Posted
2001 Volvo V70 X/C 2.4L MIL Lamp on VIN: YV1SZ58D11
P0422: TWC Threshold exceeded. Hello Volvo Gurus, I've followed the recommendations of my Mitchell program. I could not eyeball a freeze frame (was empty) so I'm not at all certain under what conditions this code sets. Customer was no help in this area because numerous people operate this ...
April 06, 2006