C0900 - Control Module Power Circuit Malfunction/High Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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C0900 Possible Causes

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

First diagnose C0900 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

C0900 Tech Notes

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

Cost of diagnosing the C0900 code

    Labor: 1.0

    The cost of diagnosing the C0900 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

C0900 Possible Symptoms

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

C0900 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 - Control Module Power Circuit Malfunction/High Voltage - AutoCodes.com

C0900 More Information

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C0900 Information for specific makes

  • C0900 BUICK Control Module Power Circuit Malfunction/High Voltage
  • C0900 CADILLAC Control Module Power Circuit Malfunction/High Voltage
  • C0900 CHEVROLET Control Module Power Circuit Malfunction/High Voltage
  • C0900 GMC Control Module Power Circuit Malfunction/High Voltage
  • C0900 SATURN Control Module Power Circuit Malfunction/High Voltage

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C0900 Comments

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