C1206 ABS Rear Isolation Valve Circuit Failure

• OBD2 Code: C1206
• Description: ABS Rear Isolation Valve Circuit Failure
• Definition: This code indicates a malfunction in the circuit of the rear isolation valve within the Anti-lock Braking System (ABS). The issue could be due to electrical problems such as wiring faults, connector issues, or a failed valve.

C1206 ABS Rear Isolation Valve Circuit Failure

Severity: Moderate

Common Causes

C1206 – ABS Rear Isolation Valve Circuit Failure

Common Causes:

• Faulty rear isolation valve
• Corroded or damaged wiring/connectors in the ABS system
• Low brake fluid level
• Faulty ABS control module

 

Common Misdiagnosis

OBD2 Code: C1206

Description: ABS Rear Isolation Valve Circuit Failure

Common Misdiagnosis: Replacing the ABS module without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

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OBD2 Code: C1206

Description: ABS Rear Isolation Valve Circuit Failure

• Check for any blown fuses related to the ABS system.
• Inspect the wiring and connectors for damage or corrosion in the rear isolation valve circuit.
• Test the rear isolation valve solenoid for proper operation using a multimeter.
• Verify that there is power and ground at the rear isolation valve connector.
• Use a scan tool to check for additional ABS-related codes that may indicate other issues.
• If necessary, replace the faulty rear isolation valve or repair any damaged wiring/connectors.
• Clear the code and test drive the vehicle to ensure the issue is resolved.