P0022

Universal

Intake Camshaft Position Timing - Over-Retarded (Bank 2)

Definition source: General OBD-II reference catalog

Definition verification: Not independently verified for display.

Time: Varies by diagnosis and vehicle | Diagnostic difficulty: Medium

Medium Severity

The engine computer detects that the Bank 2 intake camshaft timing is more retarded than expected. Cam timing helps control when the intake valves open and close; the computer monitors camshaft and crankshaft signals to compare actual timing with the timing it is trying to command. A mismatch can affect engine performance or emissions, though the code alone does not prove that a particular part has failed.

Report an error with this code

⚠️ Before You Begin (Safety First)

If the engine runs very roughly, loses significant power, stalls, or makes unusual mechanical noises, stop driving when safe and arrange an inspection. If an oil-pressure warning appears, stop the engine as soon as it is safe to do so. Otherwise, have the issue checked promptly, especially if symptoms worsen.

Common Symptoms

The check-engine light may be on.
The engine may idle roughly if the cam timing mismatch affects valve timing at idle.
Reduced power or slower acceleration may occur if the engine cannot achieve the intended cam timing.
Starting may be difficult or the engine may stall if the timing mismatch is substantial.
Fuel economy or emissions may worsen because valve timing affects engine breathing and combustion.
There may be no noticeable symptoms; the computer can detect a timing mismatch before the driver notices a change.

Common Causes

Low, degraded, contaminated, or incorrect engine oil may interfere with oil-operated cam timing control.
Restricted oil flow or a blocked passage may prevent the timing system from responding as intended.
A fault in the Bank 2 intake camshaft timing actuator or its oil-control valve may limit timing movement.
Damaged wiring or a poor electrical connection in the cam timing control circuit may affect actuator operation.
A camshaft or crankshaft signal problem may cause the computer to calculate cam timing incorrectly.
Mechanical wear or a timing-chain, tensioner, or cam-phaser problem may leave the intake camshaft retarded.

Diagnostic Steps

Check the engine oil level on level ground using the vehicle's owner information. Correct a low level with the specified oil and look for signs of a leak.
Review oil service history and check for oil that appears unusually dirty or contaminated. Use the oil grade specified for the vehicle; incorrect or neglected oil can affect oil-operated timing control.
Note any rough running, loss of power, stalling, unusual mechanical noise, or oil-pressure warning. Stop driving and seek help if serious symptoms occur.
If a suitable scan tool is available, record this code and any related codes before clearing anything. Related faults can help distinguish a timing-control issue from a signal or electrical problem.
With the engine off and cool, visually check accessible wiring and connectors for damage, looseness, or corrosion. Do not unplug components or probe circuits unless you have the correct vehicle-specific procedure.
If the code returns or symptoms continue, arrange diagnosis using vehicle-specific service information. Further checks may involve scan data, circuit testing, oil-flow checks, or mechanical timing inspection.

When to Call a Professional

Check for related fault codes and compare commanded and actual Bank 2 intake cam timing with a suitable scan tool. Verify oil level and condition, then inspect the variable valve timing control circuit and relevant wiring. If those checks do not identify the cause, assess oil flow to the timing system and verify mechanical cam timing using model-, year- and engine-specific service information.

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Commonly Asked Questions

Does P0022 mean the Bank 2 intake camshaft actuator must be replaced?

No. The code identifies a detected timing condition, not a confirmed failed part. Oil condition, oil flow, wiring, sensor signals, the actuator, or mechanical timing may need to be checked.

What does “over-retarded” mean here?

It means the computer detects the Bank 2 intake camshaft at a more retarded timing position than expected. It does not, by itself, identify why the timing is off.

Can low or dirty oil cause this code?

It can contribute because many cam timing systems use engine oil to move or control timing components. Check the level and use the oil specification required for the vehicle, but do not assume oil is the only possible cause.

Can I keep driving with P0022?

Driving risk depends on symptoms and the underlying cause. Arrange prompt diagnosis; stop driving if the engine stalls, runs severely rough, loses substantial power, makes unusual mechanical noises, or shows an oil-pressure warning.

Does Bank 2 identify a particular side of every engine?

No universal side or component location can be inferred from this code alone. Bank identification and service procedures depend on the vehicle's engine design.

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