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P1602
Systeem
Powertrain (ECM)
Scanner vereist
Full-system scanner (engine, ABS, SRS, transmission, service resets)

ECM Has Not Been Programmed

Understand P1602, common causes, and the right TOPDON scanner to diagnose it.

Control module missing calibration or VIN programming.

Veelvoorkomende symptomen

  • No-start after module replacement
  • Security or immobilizer light

Typische oorzaken

  • New ECM not flashed
  • Used module from donor vehicle
  • Interrupted programming

Welke scanner heb je nodig?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen TOPDON scanners

Veelgestelde vragen

What does P1602 mean?
P1602 indicates ecm has not been programmed. Control module missing calibration or VIN programming.
Can I diagnose P1602 with a basic code reader?
P1602 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for P1602?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P1602?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.