Power Solutions, Inc.

DTC 652

UnclassifiedFuel

What This Code Means

Malfunction Indicator Lamp (MIL) on during active fault; ECM shuts off fuel injectors

Possible Causes

  • •Engine RPM exceeds 4000 for 2 seconds continuously
  • •Incorrect ECM calibration or incorrect Service Part Number
  • •Large manifold vacuum leaks
  • •Presence of other active DTC codes
  • •Throttle mechanical operation fault

Suggested Actions

  1. 1Check and correct mechanical operation of the throttle
  2. 2Clear DTC information from ECM using DST and road test engine to operating temperature to confirm normal operation
  3. 3Diagnose and repair any other active DTC codes prior to proceeding
  4. 4Inspect engine for large manifold vacuum leaks and correct if found
  5. 5Perform On-Board (OBD) System Check
  6. 6Verify Service Part Number on ECM and replace ECM if calibration is incorrect

Related Power Solutions, Inc. Fault Codes

DTC 651DTC 633DTC 515DTC 511631556-RTI 3555-RTI 2514-RTI 1513-A/D512243241
Browse all Power Solutions, Inc. fault codes

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