C1242 Buick Code - Pump Motor Circuit Open
Quick Answer
The system relay is energized when the ignition is ON. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1242 Buick indicates Pump Motor Circuit Open.
- Common causes
- Common causes include 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.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1242 Buick Description
- 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
What are the Possible Causes of the DTC C1242 Buick?
- 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)
How to Fix the DTC C1242 Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1242 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the C1242 Buick code?
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Frequently Asked Questions about C1242 Buick Code
1. What are common symptoms of OBDII code C1242 in a Buick related to the Pump Motor Circuit Open?
- Common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential issues with the vehicle's stability control system.
2. What are the possible causes of the Pump Motor Circuit Open OBDII code in a Buick?
- The code C1242 can be triggered by a malfunctioning ABS pump motor, damaged wiring or connectors in the circuit, or a faulty ABS control module.
3. How can I diagnose the cause of the Pump Motor Circuit Open OBDII code in my Buick?
- Diagnosing the issue may involve conducting a visual inspection of the wiring and connectors, testing the ABS pump motor, and using a diagnostic scanner to retrieve specific fault codes.
4. Can I still drive my Buick with the C1242 code for Pump Motor Circuit Open?
- It is not recommended to drive the vehicle with the ABS warning light on, as this indicates a potential safety issue with the ABS system. It's best to address the problem promptly.
5. What are some repair tips for fixing the Pump Motor Circuit Open issue in a Buick?
- Repairing the C1242 code may involve replacing the ABS pump motor, repairing damaged wiring or connectors, or reprogramming the ABS control module, depending on the root cause.
6. Is it possible to reset the OBDII code C1242 in a Buick without addressing the underlying issue?
- While clearing the fault code may temporarily turn off the warning light, the issue causing the code will persist, and the ABS system may still be compromised. It's crucial to fix the root problem.
7. How much does it typically cost to repair the Pump Motor Circuit Open OBDII code in a Buick?
- Repair costs can vary depending on the specific cause of the issue, but it's advisable to budget for potential expenses related to parts replacement, labor, and diagnostic tests.
8. Can a DIY enthusiast without specialized tools fix the C1242 code in a Buick?
- Some aspects of diagnosing and repairing the issue may be challenging without proper tools and expertise. It's recommended to consult a qualified mechanic for accurate diagnosis and repair.
9. Will the C1242 code for Pump Motor Circuit Open trigger a check engine light in a Buick?
- The C1242 code is related to the ABS system and may not always trigger the check engine light. However, the ABS warning light will illuminate to indicate an issue with the system.
10. How long does it take to resolve the Pump Motor Circuit Open issue in a Buick?
- The repair time can vary based on the specific cause of the problem and the availability of parts. Some repairs may be completed within a few hours, while more complex issues may take longer to fix.
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