122

UnclassifiedEmissions

What This Code Means

ECM assigns a default limp-home value

Possible Causes

  • •Current DTC for a sensor

Suggested Actions

  1. 1Clear DTCs from memory with a laptop computer, or by placing the diagnostic test switch in the OFF position and removing the system main power fuse or battery cable for 15 seconds
  2. 2If more than one DTC is detected, begin diagnosing with the lowest number DTC first and diagnose each problem to correction
  3. 3Read DTCs using a diagnostic test light or a laptop computer
  4. 4Repair DTC 112 first before DTC 122

Related General Motors Powertrain Fault Codes

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