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P2029 Diagnostic Trouble Code Discussion for October 2013

Intake Air Temperature Sensor Performance

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Trouble Ticket Help Requests for DTC P2029
Help Request Posted
2008 Mercedes-Benz E320 Bluetec 3.0L MIL Lamp on VIN: WDBUF22X48
P2029: O2 sensor down steam twc pump current for om629 of oxygen sensor open curcuit. Codes p2029-004 and p2669-002 keep returning after about 1k miles i have checked each wire from ecu to o2 sensor for resistance and applied a load to each wire ok. Checked power to o2 with a load ok car runs fine and fuel milage is great. I thought about atta...
October 21, 2013