[SOLVED] P12F8 Code: Fixing Low Frequency Exhaust Flow Valve Feedback – Bank 2

The automobile fault code P12F8 indicates a problem with the Cylinder Deactivation Exhaust Flow Valve.

This can cause the Engine Light to turn on.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0. It is important to address this problem promptly to prevent further damage to the vehicle.

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: p12f8.

  • The symptoms of the automobile fault code p12f8 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p12f8 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 P12F8 can be caused by the following: 1.
  • Faulty Cylinder Deactivation Exhaust Flow Valve.
  • 2.
  • Cylinder Deactivation Exhaust Flow Valve harness is open or shorted.
  • 3.
  • Cylinder Deactivation Exhaust Flow Valve circuit has a poor electrical connection.

To fix the automobile fault code p12f8, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p12f8, 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 factors influencing the cost of diagnosing and fixing the automobile fault code p12f8 are the estimated repair time and the hourly rate charged by auto repair shops. The estimated repair time for this fault code is 1.0 hour.

Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors will determine the overall cost of diagnosing and fixing the p12f8 fault code.

The P12F8 fault code refers to a problem with the Cylinder Deactivation Exhaust Flow Valve. This valve is part of the exhaust flow control system, which is responsible for tuning the exhaust note of the vehicle.

The Powertrain Control Module (PCM) monitors this valve and sets the OBDII code when it is not functioning according to factory specifications.

In this case, the code specifically indicates a low frequency bank feedback circuit issue with the Cylinder Deactivation Exhaust Flow Valve.

This means that there is a problem with the electrical circuit that provides feedback on the valve’s performance.

It is important to address this issue to ensure proper functioning of the exhaust system and overall vehicle performance.

What are the possible causes for the automobile fault code P12F8?

If you see the engine light or service engine soon warning light on, the fault code P12F8 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 this issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage or corrosion. Additionally, check for broken, bent, pushed out, or corroded pins in the connectors.

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 be the cause of a faulty cylinder deactivation exhaust flow valve or a poor electrical connection in the valve circuit. 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.

p12f8 error fault code explained

If your engine light is on and you’re seeing the P12F8 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.

Scroll to Top