FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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P0138




P Code: P0138


Diagnostic Trouble Code (DTC) Description:

Rear Heated Oxygen Sensor (HO2S).

Fault Type:

Signal too high. Intermittent fault.

Signal too high. Permanent fault.

For Testing and Inspection refer to Manufacturer Code: ECM - 2A0A
ECM-2A0A