Power Solutions, Inc.

DTC 122

UnclassifiedGeneral

What This Code Means

ECT voltage low; DST displays ECT voltage of 0.05 or less

Possible Causes

  • •Continuity between ECT sensor connector signal pin A and ground pin B
  • •Incorrect resistance value in ECT sensor
  • •Intermittent problem
  • •Unresolved DTC 112 fault

Suggested Actions

  1. 1Check resistance between the two terminals of the ECT sensor using a DVOM and compare to temperature chart
  2. 2Connect Diagnostic Scan Tool (DST) in System Data Mode to monitor ECT voltage
  3. 3Disconnect ECM wire harness connector and test for continuity between ECT sensor connector signal pin A and ground pin B
  4. 4Disconnect ECT wire harness connector and re-check ECT voltage on DST
  5. 5Perform On-Board (OBD) System Check
  6. 6Repair DTC 112 first
  7. 7Repair circuit as necessary (refer to Wiring Repairs in Engine Electrical)
  8. 8Replace ECT sensor

Related Power Solutions, Inc. Fault Codes

DTC 244DTC 512DTC 112DTC 513653DTC 514651DTC 516638DTC 531637DTC 532
Browse all Power Solutions, Inc. fault codes

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