C1207
ABS Rear Isolation Valve Circuit Open
C1207 is an OBD-II diagnostic trouble code meaning: ABS Rear Isolation Valve Circuit Open. Common causes: broken or damaged wiring harness to rear isolation valve, corrosion or poor contact in connectors. Estimated repair cost: $33–167.
Symptoms
- The ABS and/or ESC indicator on the dashboard is on
- Reduced efficiency of the ABS system on the rear axle
- Possible false alarms of ABS
Causes
- Broken or damaged wiring harness to rear isolation valve
- Corrosion or poor contact in connectors
- Rear Isolation Solenoid Valve Malfunction
- Problems with the ABS module
How to Fix
- Diagnose the ABS system using a scanner
- Visually inspect the wiring harness and connectors for damage.
- Check valve resistance and continuity
- If necessary, replace damaged wires or connectors
- Test the operation of the valve and replace if faulty
- Clear error codes and check if error is returned
Related codes
FAQ
What does the C1207 code mean?
C1207 is an OBD-II diagnostic trouble code that indicates: ABS Rear Isolation Valve Circuit Open
What causes a C1207 error code?
The most common causes of C1207 include: Broken or damaged wiring harness to rear isolation valve; Corrosion or poor contact in connectors; Rear Isolation Solenoid Valve Malfunction; Problems with the ABS module.
How do I fix a C1207 diagnostic trouble code?
To fix C1207: Diagnose the ABS system using a scanner. Visually inspect the wiring harness and connectors for damage.. Check valve resistance and continuity. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1207?
Do not drive — repair immediately
How much does it cost to fix C1207?
The estimated repair cost for C1207 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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