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P2031 Diagnostic Trouble Code Discussion for December 2007

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Trouble Ticket Help Requests for DTC P2031
Help Request Posted
2002 Mercedes-Benz SLK230 Kompressor 2.3L Excessive Emissions VIN: WDBKK49FX2
P2031: o2 sensor upstream three way cat converter. Vehicle came in w/CEL, had o2 code, found TSB on Cam adjuster leaking oil. This one was, so replaced cam adjuster & cleaned harness & PCM of oil residue. Light came back on same codes, recleaned sensors, harness & PCM, all readings are good, fuel p...
December 12, 2007