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P12F9 Code - Cylinder Deactivation Exhaust Flow Valve Feedback Circuit High Frequency Bank 2

- Code Popularity: 4,170 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P12F9?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 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
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How to Fix the DTC P12F9?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P12F9 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P12F9 Description

The cylinder deactivation exhaust flow control system consists of valves installed at the inlet of the muffler. The exhaust flow control system is used to tune the exhaust note. The Powertrain Control Module (PCM) monitors the Cylinder Deactivation Exhaust Flow Valve. The PCM sets the OBDII code when the Cylinder Deactivation Exhaust Flow Valve is not to factory specifications.

OBDII Code P12F9 - Cylinder Deactivation Exhaust Flow Valve Feedback Circuit High Frequency Bank 2 - AutoCodes.com
P12F9 Code - Cylinder Deactivation Exhaust Flow Valve Feedback Circuit High Frequency Bank 2

Need More Information on the Code?

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Information for Specific Makes

  • P12F9 Chevrolet Cylinder Deactivation Exhaust Flow Valve Feedback Circuit High Frequency Bank 2
  • P12F9 GMC Cylinder Deactivation Exhaust Flow Valve Feedback Circuit High Frequency Bank 2

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Code P12F9 comments

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