P12FC
Cylinder Deactivation Exhaust Flow Valve Stuck Closed Bank 2
P12FC is an OBD-II diagnostic trouble code meaning: Cylinder Deactivation Exhaust Flow Valve Stuck Closed Bank 2. Common causes: mechanical valve sticking, valve contamination by deposits. Estimated repair cost: $28–89.
Symptoms
- Deterioration in acceleration dynamics
- Increased fuel consumption
- Unstable engine operation at idle
- Check Engine Light Illuminates
- Noises from the exhaust system
Causes
- Mechanical valve sticking
- Valve contamination by deposits
- Control solenoid valve malfunction
- Wiring harness damage
- Problems with the engine control unit
How to Fix
- Valve operation diagnostics
- Cleaning or replacing a stuck valve
- Checking the control solenoid valve
- Checking the integrity of the wiring harness
- Resetting the error and checking the system operation
Related codes
FAQ
What does the P12FC code mean?
P12FC is an OBD-II diagnostic trouble code that indicates: Cylinder Deactivation Exhaust Flow Valve Stuck Closed Bank 2
What causes a P12FC error code?
The most common causes of P12FC include: Mechanical valve sticking; Valve contamination by deposits; Control solenoid valve malfunction; Wiring harness damage.
How do I fix a P12FC diagnostic trouble code?
To fix P12FC: Valve operation diagnostics. Cleaning or replacing a stuck valve. Checking the control solenoid valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P12FC?
Yes, but get it checked soon
How much does it cost to fix P12FC?
The estimated repair cost for P12FC is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat