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C1218 Buick Code - Pump Motor Circuit Shorted To Voltage Or Motor Ground Open

- Code Popularity: 2,489 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1218 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Brake Pressure Modulator Valve (BPMV)
  • Brake Pressure Modulator Valve (BPMV) harness is open or shorted
  • Brake Pressure Modulator Valve (BPMV) circuit poor electrical connection
  • Faulty Electronic Brake Control Module (EBCM)
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How to Fix the DTC C1218 Buick?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1218 Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code C1218 Buick Description

The system relay is energized when the ignition is ON. The system relay supplies voltage to the solenoid valves and the pump motor. This voltage is referred to as the system voltage. The Electronic Brake Control Module (EBCM) controls each solenoid valve by grounding the solenoid. The EBCM controls the pump motor by grounding the control circuit. The pump serves 2 purposes:
- Transfers brake fluid from the brake calipers to the master cylinder reservoir during pressure decrease events.
- Transfers brake fluid from the master cylinder reservoir to the brake calipers during pressure increase events.

OBDII Code C1218 Buick - Pump Motor Circuit Shorted To Voltage Or Motor Ground Open - AutoCodes.com
C1218 Buick Code - Pump Motor Circuit Shorted To Voltage Or Motor Ground Open

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Code C1218 Buick comments

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