P12E3 - Cylinder Deactivation Exhaust Flow Valve Control Circuit Open

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

P12E3 Possible 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

First diagnose P12E3 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P12E3 code

    Labor: 1.0

    The cost of diagnosing the P12E3 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P12E3 Possible Symptoms

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

P12E3 Meaning

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 P12E3 - Cylinder Deactivation Exhaust Flow Valve Control Circuit Open - Engine-Codes.com

P12E3 More Information

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P12E3 Information for specific makes

  • P12E3 CHEVROLET Cylinder Deactivation Exhaust Flow Valve Control Circuit Open
  • P12E3 GMC Cylinder Deactivation Exhaust Flow Valve Control Circuit Open

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