The automobile fault code P12EF indicates a problem with the Cylinder Deactivation Exhaust Flow Valve.

This can be identified by the Engine Light or Service Engine Soon Warning Light turning on.

The cause of this fault code could be a faulty valve, an open or shorted harness, or a poor electrical connection in the valve circuit.

To fix this issue, it is recommended to visually inspect the wiring harness and connectors for any damage. Look out for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this problem is estimated to be around 1.0 hour.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the automobile fault code: p12ef.

  • The symptoms of the automobile fault code P12EF include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p12ef can be caused by a faulty Cylinder Deactivation Exhaust Flow Valve, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P12EF can be caused by: a faulty Cylinder Deactivation Exhaust Flow Valve, an open or shorted harness for the Cylinder Deactivation Exhaust Flow Valve, and a poor electrical connection in the Cylinder Deactivation Exhaust Flow Valve circuit.

To fix the automobile fault code p12ef, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p12ef, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded connector pins.
  • The estimated repair time for this fix is 1.0 hour.

The fault code p12ef has an estimated repair time of 1.0 hour.

Auto repair shops typically charge between $75 and $150 per hour for this type of repair.

The P12EF fault code refers to a problem with the Cylinder Deactivation Exhaust Flow Valve.

This valve is responsible for controlling the exhaust flow in the cylinder deactivation system. It is located at the inlet of the muffler and is used to tune the exhaust note of the vehicle.

When the Powertrain Control Module (PCM) detects that the Cylinder Deactivation Exhaust Flow Valve is not functioning properly and is stuck closed, it sets the P12EF fault code.

This means that the valve is not operating within the factory specifications. If you encounter this fault code, it is important to have the Cylinder Deactivation Exhaust Flow Valve inspected and repaired. A stuck closed valve can affect the performance and efficiency of the cylinder deactivation system, leading to potential issues with engine operation.

What are the possible causes of the automobile fault code P12EF?

If you see the engine light on or the service engine soon warning light, the fault code P12EF could be the culprit. This code is often caused by a faulty cylinder deactivation exhaust flow valve, an open or shorted harness, or a poor electrical connection in the valve circuit. To fix the issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage or corrosion, and check for broken, bent, pushed out, or corroded pins in the connectors. Don’t forget to check the possible causes mentioned above for a more comprehensive solution.

How can I visually inspect the wiring harness and connectors to fix the issue?

To fix the issue of the Engine Light being ON or the Service Engine Soon Warning Light, start by checking the possible causes. Then, visually inspect the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This thorough inspection will help identify any issues with the Cylinder Deactivation Exhaust Flow Valve and its electrical connections.

What should I look for when checking for damaged components or corroded connector pins?

When troubleshooting an engine light or service engine soon warning light, it’s important to check for damaged components and corroded connector pins. These issues can cause faults in the cylinder deactivation exhaust flow valve, leading to the light being triggered. To fix the problem, visually inspect the wiring harness and connectors, paying close attention to any signs of damage. Look for broken, bent, pushed out, or corroded pins on the connectors. This thorough inspection will help identify and resolve the issue effectively.

p12ef error fault code explained

If your engine light is on and you’re dealing with a P12EF fault code, it could be due to a faulty Cylinder Deactivation Exhaust Flow Valve or issues with the valve’s harness and electrical connection.

To fix it, visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Look out for broken or bent pins on the connectors as well.

Scroll to Top