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OBD-II Code

P0602 — Control Module Programming Error

A programming error is detected in the control module, preventing correct operation of the ECU or PCM.

System Engine
Severity High
Safe to drive? Not recommended
Advanced scanner Yes

What does code P0602 mean?

A programming error is detected in the control module, preventing correct operation of the ECU or PCM.

Common symptoms

  • Module not responding
  • hard starting
  • multiple electrical faults

Possible causes

  • Incomplete or incorrect programming
  • wrong PCM installed

Initial recommendation

Reprogram the PCM/ECU using the correct software and calibration.

Safety notice

This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine code P0602 with your vehicle's actual symptoms for more complete diagnostic guidance.

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