P0602 – Control Module Programming Error

Description

The ECM detects an incorrect or corrupted programming state.

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Symptoms

  • No start
  • Poor performance
  • Transmission issues

Causes

  • Incorrect ECM programming
  • Failed update
  • ECM replacement without coding

Diagnosis

  • Check ECM coding
  • Verify VIN programming
  • Scan for module faults

Repair

  • Reprogram ECM
  • Perform correct coding
  • Replace ECM if needed

Related Problems

Related Fault Codes