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P0021 Subaru Code - Intake Camshaft Position Timing Over-Advanced Or System Performance Bank 2

- Code Popularity: 56,388 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0021 Subaru?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low or Dirty Engine Oil
  • Faulty Oil Flow Control Solenoid
  • Oil Flow Control Solenoid harness is open or shorted
  • Oil Flow Control Solenoid circuit poor electrical connection
  • Camshaft Phaser/Sprocket
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How to Fix the DTC P0021 Subaru?

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.

Code Tech Notes

There is a Factory Service Bulletin for the following Subaru models:
2012–2013 Subaru Impreza
2012–2013 Subaru XV Crosstrek
2013 Subaru Legacy
2013 Subaru Outback
2011–2013 Subaru Forester
Subaru Factory Service Bulletin OBDII Code P0021









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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0021 Subaru 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)
  • Lack/Loss of power
  • Engine rough idle

Code P0021 Subaru Description

The Active Valve Control System (AVCS) varies camshaft timing by changing the camshaft phase angle depending on engine load in order to increase engine performance and efficiency and lower emission levels. The Engine Control Module (ECM) controls the oil flow control solenoids, mounted on the valve cover of each cylinder head, which acts upon the spool valves to adjust oil pressure flow to the desired chamber inside the camshaft-phasers. The Diagnostic Trouble Code (DTC) sets when the difference between the actual advanced timing and desired advanced timing is larger than the specified amount.

OBDII Code P0021 Subaru - Intake Camshaft Position Timing Over-Advanced Or System Performance Bank 2 - AutoCodes.com
P0021 Subaru Code - Intake Camshaft Position Timing Over-Advanced Or System Performance Bank 2

Need More Information on the Code?

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