C1266 Buick Code - Left Rear Outlet Valve Solenoid Malfunction
Quick Answer
The system relay is energized when the ignition is ON. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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
- C1266 Buick indicates Left Rear Outlet Valve Solenoid Malfunction.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 C1266 Buick Description
What are the Possible Causes of the DTC C1266 Buick?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module (EBCM) harness is open or shorted
- Electronic Brake Control Module (EBCM) circuit poor electrical connection
How to Fix the DTC C1266 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 C1266 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.
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Frequently Asked Questions about C1266 Buick Code
1. What does the OBDII code C1266 mean on a Buick?
C1266 indicates a malfunction in the left rear outlet valve solenoid, which is part of the ABS (Anti-lock Braking System) responsible for controlling brake fluid pressure at the left rear wheel.
2. What are the symptoms of a C1266 code in a Buick?
Common symptoms include the ABS warning light illuminating, reduced braking performance, and potential loss of ABS function, especially during hard braking or slippery conditions.
3. What causes the C1266 code to appear?
The code can be triggered by a faulty left rear outlet valve solenoid, corroded or damaged wiring, poor electrical connections, or an issue with the ABS control module.
4. Can I still drive my Buick with the C1266 code?
Yes, you can drive the vehicle, but the ABS system may not function properly, increasing the risk of wheel lock-up during hard braking or on slippery roads.
5. How do I diagnose the C1266 code in a Buick?
Use a diagnostic scan tool to confirm the code, then inspect the wiring, connectors, and the left rear outlet valve solenoid for damage, corrosion, or loose connections.
6. How do I fix the C1266 code on my Buick?
Repairs may include replacing the left rear outlet valve solenoid, repairing damaged wiring, cleaning corroded connectors, or replacing the ABS control module if necessary.
7. How much does it cost to repair the C1266 code on a Buick?
Repair costs vary but typically range from $150 to $500, depending on whether the issue is with the solenoid, wiring, or ABS control module.
8. Can a C1266 code clear itself?
It’s unlikely. The underlying issue causing the malfunction must be resolved, and the code may need to be cleared with a diagnostic tool.
9. What tools are needed to repair a C1266 code?
You’ll need an OBDII scanner, a multimeter for electrical testing, and basic tools for inspecting and repairing wiring or replacing components.
10. Is the C1266 code a common issue on Buicks?
While not extremely common, C1266 can occur on older models or vehicles with high mileage due to wear and tear on ABS components or electrical connections.
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