P12FE Code - Cylinder Deactivation Exhaust Flow Valve Position Not Learned Bank 2
Quick Answer
The cylinder deactivation exhaust flow control system consists of valves installed at the inlet of the muffler. Common causes include Faulty Cylinder Deactivation Exhaust Flow Valve, Cylinder Deactivation Exhaust Flow Valve harness is open or shorted, Cylinder Deactivation Exhaust Flow Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P12FE indicates Cylinder Deactivation Exhaust Flow Valve Position Not Learned Bank 2.
- Common causes
- Common causes include Faulty Cylinder Deactivation Exhaust Flow Valve, Cylinder Deactivation Exhaust Flow Valve harness is open or shorted, Cylinder Deactivation Exhaust Flow Valve circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P12FE Description
What are the Possible Causes of the DTC P12FE?
- Faulty Cylinder Deactivation Exhaust Flow Valve
- Cylinder Deactivation Exhaust Flow Valve harness is open or shorted
- Cylinder Deactivation Exhaust Flow Valve circuit poor electrical connection
How to Fix the DTC P12FE?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P12FE code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P12FE Chevrolet — Cylinder Deactivation Exhaust Flow Valve Position Not Learned Bank 2
- P12FE GMC — Cylinder Deactivation Exhaust Flow Valve Position Not Learned Bank 2
Frequently Asked Questions about P12FE Code
1. What are the common symptoms of OBDII code P12FE?
- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.
2. What does the OBDII code P12FE indicate?
- OBDII code P12FE indicates that the Cylinder Deactivation Exhaust Flow Valve Position for Bank 2 has not been learned by the vehicle's ECM.
3. What are the possible causes of OBDII code P12FE?
- Possible causes include a faulty exhaust flow valve, issues with the cylinder deactivation system, electrical problems, or a malfunctioning ECM.
4. How can I diagnose the OBDII code P12FE?
- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the exhaust flow valve and related components, and testing the electrical connections.
5. Is it safe to continue driving with OBDII code P12FE present?
- It is not recommended to continue driving with this code present, as it can lead to further damage to the engine and emissions system.
6. How can OBDII code P12FE be repaired?
- Repairing this code may involve replacing the faulty exhaust flow valve, addressing issues with the cylinder deactivation system, or reprogramming the ECM.
7. Can I reset the OBDII code P12FE myself?
- While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.
8. Are there any preventative maintenance tips to avoid OBDII code P12FE?
- Regularly servicing and inspecting the cylinder deactivation system, exhaust flow valve, and related components can help prevent the occurrence of this code.
9. How much does it typically cost to repair OBDII code P12FE?
- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, including parts and labor.
10. Can OBDII code P12FE be caused by a loose gas cap?
- No, OBDII code P12FE specifically relates to the Cylinder Deactivation Exhaust Flow Valve Position and is not related to a loose gas cap.
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