P12EB
Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Low Frequency Bank 1
P12EB is an OBD-II diagnostic trouble code meaning: Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Low Frequency Bank 1. Common causes: exhaust gas flow control valve malfunction, open or short circuit in control circuit. Estimated repair cost: $56–167.
Symptoms
- Increased fuel consumption
- Unstable engine operation when cylinders are deactivated
- Check Engine Light Illuminates
- Reduced engine power
- Possible engine vibrations
Causes
- Exhaust gas flow control valve malfunction
- Open or short circuit in control circuit
- Poor contact in valve connectors
- Engine control unit malfunction
- Mechanical valve jamming
How to Fix
- Check the condition of the exhaust gas flow control valve
- Check the integrity of wiring and connectors
- Measure valve resistance
- Check control signals from the computer
- Replace faulty valve if necessary
Related codes
FAQ
What does the P12EB code mean?
P12EB is an OBD-II diagnostic trouble code that indicates: Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Low Frequency Bank 1
What causes a P12EB error code?
The most common causes of P12EB include: Exhaust gas flow control valve malfunction; Open or short circuit in control circuit; Poor contact in valve connectors; Engine control unit malfunction.
How do I fix a P12EB diagnostic trouble code?
To fix P12EB: Check the condition of the exhaust gas flow control valve. Check the integrity of wiring and connectors. Measure valve resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P12EB?
Yes, but get it checked soon
How much does it cost to fix P12EB?
The estimated repair cost for P12EB is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat