Error P0022 – how to fix?

Code definition P0022

Camshaft Position A – Timing Delay (Bank 2)

What does the code P0022 mean

P0022 is a general 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 the ECM ordered. This camshaft timing delay condition may occur during the camshaft timing lead or camshaft lag phase.

What causes the code P0022?

• The variable valve timing (OCV) control valve (VCT) is stuck open.
• The camshaft shifter is damaged and stuck in the retarded position.
• There are problems with the flow of oil to the piston and the VCT chamfer.

What are the symptoms of the P0022 code?

• The ECM turns on the Check Engine light.
• 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 amounts of exhaust gas and may not pass the exhaust emission test.

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

How can a mechanic diagnose the code P0022?

• Visually inspect the electrical connections of the camshaft sensor.
• Check the oil control solenoid valve and crankshaft sensor for loose connections or damaged lines.
• Checks that the engine oil is clean and full and that its viscosity is correct.
• Scanning and documenting codes and viewing data from frozen frames to see when a code has been set
• Perform manufacturer specific tests for the code P0022 and repair as recommended.

The most common errors when diagnosing the code P0022

Follow these simple tips to avoid mistakes:

1. Always check whether there is a fault before starting any repair work.
2. Make sure the viscosity of the oil is correct and that it is clean.
3. Perform the pinpoint test step by step to avoid misdiagnosis.
4. Do not replace parts unless required by the pinpoint or visual test.

How serious is the P0022 code?

• The fuel mileage will drop and the engine may have carbon build-up on the pistons and valves.
• The engine may have trouble starting, wobbling and stalling.
• Engine exhaust emissions may exceed federal and local limits.

What repairs can remove the P0022 code?

1. Resetting fault codes and performing a road test.
2. Change the oil and filter using oil with a viscosity suitable for the engine.
3. Repair or replace wiring or connection to the camshaft oil regulating valve (OCV).
4. Replace the camshaft oil regulating valve in station 2.
5. Check the timing chain alignment and cam phases for damage.

Additional notes regarding code P0022

The camshaft position adjuster controls the timing lead and deceleration function with oil pressure using the oil regulating valve. The oil must be of the correct viscosity for the camshaft timing control to function as intended.

Translated from www.DeepL.com/Translator (free version)