C0123
Front Outlet Valve Right
C0123 is an OBD-II diagnostic trouble code meaning: Front Outlet Valve Right. Common causes: exhaust valve stuck, open or short circuit in control circuit. Estimated repair cost: $56–167.
Symptoms
- The ABS/ESP indicator on the dashboard is on
- Reduced ABS performance
- Incorrect operation of the stabilization system
- Possible jerking when braking
Causes
- Exhaust valve stuck
- Open or short circuit in control circuit
- Wiring harness damage
- ABS hydraulic unit malfunction
- Poor contact in connectors
How to Fix
- Check the condition of the wiring harness and connectors
- Measure valve resistance
- Check the voltage at the valve contacts
- Test valve operation using diagnostic equipment
- If necessary, replace the release valve or hydraulic block
Related codes
Error C0123 by Vehicle Brand
FAQ
What does the C0123 code mean?
C0123 is an OBD-II diagnostic trouble code that indicates: Front Outlet Valve Right
What causes a C0123 error code?
The most common causes of C0123 include: Exhaust valve stuck; Open or short circuit in control circuit; Wiring harness damage; ABS hydraulic unit malfunction.
How do I fix a C0123 diagnostic trouble code?
To fix C0123: Check the condition of the wiring harness and connectors. Measure valve resistance. Check the voltage at the valve contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0123?
Do not drive — repair immediately
How much does it cost to fix C0123?
The estimated repair cost for C0123 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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