C1266 Left Rear Outlet Valve Solenoid Malfunction

OBD2 Code: C1266

Description: Left rear outlet valve solenoid malfunction indicates an issue with the solenoid responsible for controlling the hydraulic pressure to the left rear brake circuit in a vehicle’s anti-lock braking system (ABS).

Definition: The OBD2 code C1266 is triggered when there is a fault detected in the left rear outlet valve solenoid of the ABS. This could be due to electrical issues, such as a short or open circuit, or mechanical failure within the solenoid itself.

C1266 – Left Rear Outlet Valve Solenoid Malfunction

Severity: Moderate

Common Causes

C1266 – Left Rear Outlet Valve Solenoid Malfunction

Common Causes:

• Faulty left rear outlet valve solenoid
• Wiring or connector issues in the left rear outlet valve solenoid circuit
• Low brake fluid level
• Contaminated brake fluid
• Brake system hydraulic malfunction

 

Common Misdiagnosis

OBD2 Code: C1266

Description: Left Rear Outlet Valve Solenoid Malfunction

Common Misdiagnosis: Faulty ABS module or wiring issues are often misdiagnosed as a solenoid malfunction.

 

Common Diagnostic Steps

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OBD2 Code: C1266

Description: Left Rear Outlet Valve Solenoid Malfunction

• Check for any additional codes that may indicate a related issue.
• Inspect the wiring and connectors to the left rear outlet valve solenoid for damage or corrosion.
• Test the voltage supply to the solenoid using a multimeter to ensure it is within specifications.
• Perform a continuity test on the solenoid circuit to check for open or short circuits.
• If equipped, use an OBD2 scanner to activate the solenoid and listen for operation sounds.
• Replace the left rear outlet valve solenoid if it fails any of these tests.
• Clear the code and perform a road test to verify that the issue has been resolved.