Error P0022 – how to fix it?

Setting the P0022 Code

Camshaft position A – time delay (Bank 2)

What code P0022 means

P0022 is a generic OBD-II code that indicates that the engine control module (ECM) has determined that the intake camshaft timing for bank 2 is more delayed than commanded by the ECM. This excessively delayed condition can occur during the forward or retarding phase of camshaft timing.

What causes code P0022?

• The oil control valve (OCV) of the variable control valve (VCT) is stuck in the open position.
• The cam lever is defective and stuck in the retarded position.
• There are problems with oil flow to the piston and the VCT phaser.

What are the symptoms of the P0022 code?

• The ECM will turn on the Check Engine light.
• The engine starts hard or hesitates when accelerating.
• Fuel mileage will decrease, and the engine may emit black smoke from the exhaust system.
• The engine will emit excessive exhaust fumes and may fail an emissions test.

Note: The driving feel may vary depending on the timing of the camshaft.

How can a mechanic diagnose the P0022 code?

• Visually check the camshaft sensor electrical connections.
• Check oil control solenoid valve and crankshaft sensor for loose connections or damaged wires.
• Check that the engine oil is clean and full and that the viscosity is correct.
• Scan and document codes and analyze frozen frame data to see when a code has been set
• Perform manufacturer-specific tests for code P0022 and repair as recommended.

The most common errors when diagnosing P0022 code

Follow these simple tips to avoid errors:

1. Always check for a malfunction before attempting repairs.
2. Make sure that the oil viscosity is correct and that it is clean.
3. Perform the identification test step by step to avoid misdiagnosis.
4. Do not replace parts unless required by a visual test or a location test.

How serious is the P0022 code?

• Fuel mileage will drop, and the engine may have carbon buildup on the pistons and valves.
• The engine may have problems with starting, hesitation, and stalling.
• Engine emissions may exceed federal and local limits.

What repairs can clear the P0022 code?

1. Reset the error codes and perform a road test.
2. Change the oil and filter using the correct viscosity oil for the engine.
3. Repair or replace the wiring or connection to the camshaft oil control valve (OCV).
4. Replace the camshaft oil control valve in position 2.
5. Check timing chain alignment and cam phasing for damage.

Additional notes on code P0022

The camshaft timing control controls the oil pressure timing advance and retard function using an oil control valve. The oil must have the correct viscosity for the camshaft timing control to function as intended.