OBDII Code List

C0900 BUICK - Control Module Power Circuit Malfunction/High Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Control Module Power
  • Control Module Power harness is open or shorted
  • Control Module Power circuit poor electrical connection

Tech notes

- C0900 00: Control Module Power Circuit Malfunction
- C0900 07: Control Module Power Circuit High Voltage

Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C0900 Buick Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Powertrain Control Module (PCM) sets the OBDII code when the Control Module Power is not to factory specifications.
OBDII Code C0900 Buick - Control Module Power Circuit Malfunction/High Voltage -

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C0900 BUICK Comments

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