Trouble CodesGM OBD Trouble CodesGM Code 61

CODE 61 - Oxygen Sensor Fault, Degraded Sensor

Trouble Code 61 indicates that the ECM has determined the oxygen sensor is contaminated or degraded, because the voltage change time is slow or sluggish.
Possible causes:

  •  Contaminated Oxygen sensor.
  •  Oxygen sensor needs replacement.

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