Power Solutions International

DTC 127

UnclassifiedGeneral

What This Code Means

MIL (Malfunction Indicator Light) ON; Engine shut down

Possible Causes

  • •Inlet air is much hotter than normal
  • •Air inlet system is obstructed, modified, or damaged
  • •Hot air from the engine, exhaust, or radiator is recirculating into the air inlets
  • •Incorrect valve lash
  • •Cracks or breaks in the air inlet system allowing heated air in

Suggested Actions

  1. 1Ensure that the air inlet is not obstructed, modified, or damaged
  2. 2Ensure hot air from the engine, exhaust, or radiator is not recirculating into the air inlets
  3. 3Refer to the 40L Owner's manual or service manual to adjust the valve lash
  4. 4Inspect the air inlet system for cracks or breaks
  5. 5Follow the diagnostic steps for DTC 112 - IAT Low Voltage

Related Power Solutions International Fault Codes

DTC 129DTC 148DTC 123DTC 234DTC 121DTC 236DTC 102 9DTC 237DTC 52DTC 238DTC 51DTC 299
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