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AutoCodes
OBDII Code List
P0641 CHEVROLET

P0641 CHEVROLET - 5 Volt Reference Voltage Incorrect

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Faulty Engine Control Module (ECM)
  • ECM harness is open or shorted
  • ECM circuit poor electrical connection
  • Shorted sensor on 5 volt circuit
What does this mean?