Fault code P0022 – a step-by-step guide to diagnosing and fixing it

Error code P0022 is displayed and the check engine light is on - what does this mean?

DTC P0022 is detected by the OBD-II/EOBD system when the intake camshaft of bank 2 has a timing position that is too late. This fault code relates to the variable valve timing system (VVT) and can occur with different manufacturers, although the exact definition may vary slightly between BMW, Mercedes-Benz, Audi and other brands.

What causes can this fault code have?

• Defective camshaft phaser (VVT actuator)
• Dirty or clogged oil strainer
• Low engine oil level or low-quality oil
• Defective camshaft position sensor
• Damaged timing chain or timing belt
• Blocked oil ducts in the VVT system
• Defective solenoid valve for camshaft phasing
• Loose or damaged cable connections
• Mechanical wear of the camshaft bearings

What symptoms occur in parallel with fault code P0022?

• Poor engine performance: Reduced power and sluggish acceleration
• Increased fuel consumption: The engine is operating inefficiently
• Uneven idling: Engine runs unevenly at idle speed
• Starting problems: Difficult to start, especially when the engine is cold
• Metallic noises: Rattling noises from the engine compartment
• Jerking when driving: Uneven engine running under load

How to fix the problem of error code P0022?

• Repairing the P0022 trouble code requires a systematic approach to identify the root cause.
• Change the engine oil and filter, as contaminated oil is the most common cause of VVT problems
• Replace the camshaft phasing unit (VVT actuator) if it is mechanically defective or clogged
• Check camshaft position sensor and replace if necessary to ensure correct timing signals
• Clean or replace the solenoid valve for camshaft phasing if it does not switch properly
• Check timing chain or timing belt for wear and replace if necessary
• Professionally flush the oil channels in the VVT system to remove blockages
• Check cable connections and plugs for corrosion or damage and repair them