3031

UnclassifiedGeneral

What This Code Means

MIL ON during active fault; Closed Loop Disabled

Possible Causes

  • Bad heater element in the UEGO sensor
  • Break in the wire harness on the heater supply or control circuits
  • Engine related problem
  • Fault within the ECM
  • Fuel system related problem

Suggested Actions

  1. 1Perform OBD system check
  2. 2Verify the operation of the MIL

Related Power Solutions International, Inc. Fault Codes

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