P0022: A Camshaft Position - Timing Over-Retarded (Bank 2)

What it means

The bank 2 intake camshaft remains retarded compared to commanded position. Common causes include a stuck-closed oil control valve, blocked oil passages, or a worn cam phaser.

At a glance

• Usually lights the check-engine light
• Affects emissions; the car can fail an emissions test

How it works

The bank 2 intake camshaft actuator uses engine oil to move the camshaft toward advanced or retarded timing under engine control module command. This code sets when the bank 2 intake cam remains more retarded than commanded, indicating that it is not advancing as expected.

Common causes

Most likely first.

1. Oil control valve stuck (retard)
2. Cam phaser worn

Symptoms

• Check engine light on
• Power loss especially in mid-rpm range
• Possible rough idle or stalling
• Increased fuel consumption

How to diagnose it

1. Save freeze-frame data and compare commanded with actual bank 2 intake cam timing in live data to confirm that the cam is lagging behind its command.
2. Check engine oil level and condition, since inadequate or dirty oil can limit the hydraulic movement needed to advance the cam.
3. Inspect the bank 2 intake oil control valve connector and wiring and check for related cam timing or actuator codes.
4. Test the bank 2 intake oil control valve and circuit using the manufacturer's procedure to identify an electrical fault or valve stuck closed.
5. If the valve and circuit pass, check VVT oil passages, cam phaser movement, and mechanical timing for restriction, wear, or misalignment.

Common fixes

• Correct low or contaminated engine oil and use the specified oil.
• Repair a damaged connector or wiring fault at the bank 2 intake oil control valve.
• Clean or replace a confirmed stuck bank 2 intake oil control valve.
• Repair restricted oil passages or replace a worn cam phaser or timing component if testing confirms it.

Can I keep driving?

Drive only as needed if the engine runs smoothly; avoid heavy loads and high engine speeds, especially if power is reduced or it idles roughly. Continued incorrect cam timing can worsen drivability and may damage engine timing components.