What causes fault code P0022?

• Most likely: Dirty or incorrect engine oil (wrong viscosity or sludge clogging VVT passages) • Likely: Faulty Oil Control Valve (OCV) / Camshaft Solenoid • Possible: Failed VVT Phaser (mechanical failure/stuck in retarded position) • Rare: Worn timing chain or faulty chain tensioner affecting timing

How do you fix fault code P0022?

STEP 1: Check engine oil level and condition. Change oil and filter if dirty or if wrong viscosity is used (VVT systems are highly sensitive to oil quality). STEP 2: Perform a functional test of the Oil Control Valve (OCV) using a scan tool. Measure the internal resistance (typical spec 7-12 Ohms at 20°C). Check for 12V supply and PWM ground signal from the ECU. STEP 3: Remove the OCV and inspect for debris in the screen or a sticking valve spool. Clean or replace as necessary. STEP 4: If the fault persists, use an oscilloscope to check the correlation between Crankshaft and Camshaft sensor signals. If electrical signals are okay but phasing is absent, the VVT Phaser unit must be replaced.

Powertrain (Engine & Gearbox)Standard EOBD

P0022 - Camshaft Position 'B' - Timing Over-Retarded (Bank 2)

Q: What are the symptoms of fault code P0022?

• Check Engine Light (MIL) illuminated • Rough idle or engine stalling when coming to a stop • Reduced engine power and poor acceleration • Increased fuel consumption • Rattle or knocking noise from the upper engine area

Last updated:1 February 2026

Related:Magnetventil (OCV), Kamakseljuster/Phaser, Motorolja, Camshaft Position Sensor, Crankshaft Position Sensor

System

Powertrain (Engine & Gearbox)

Related Fault Codes

P0000

No Diagnostic Trouble Codes (DTC) Present

P0001

Fuel Volume Regulator Control Circuit / Open

P0002

Fuel Volume Regulator Control Circuit Range/Performance

P0003

Fuel Volume Regulator Control Circuit Low

Technical Description

P0022 is a generic OBD-II diagnostic trouble code (DTC) indicating that the Engine Control Unit (ECU) has detected that the intake camshaft timing for Bank 2 is more 'retarded' than the commanded position. The system utilizes Variable Valve Timing (VVT) technology, regulated by oil pressure through an Oil Control Valve (OCV). If the camshaft timing does not advance to the target angle within a specific period, the ECU triggers this code. Bank 2 refers to the side of the engine that does not contain cylinder #1.

Possible Causes

Dirty or incorrect engine oil (wrong viscosity or sludge clogging VVT passages)

Faulty Oil Control Valve (OCV) / Camshaft Solenoid

Failed VVT Phaser (mechanical failure/stuck in retarded position)

Worn timing chain or faulty chain tensioner affecting timing

Symptoms

Check Engine Light (MIL) illuminated

Rough idle or engine stalling when coming to a stop

Reduced engine power and poor acceleration

Increased fuel consumption

Rattle or knocking noise from the upper engine area

Do you also have
other fault codes?

See how P0022 connects with your other fault codes. Our advanced analysis tool identifies causal relationships and root causes directly.

Analyze multiple codes

P0022 - Camshaft Position 'B' - Timing Over-Retarded (Bank 2)

Related Fault Codes

Technical Description

Possible Causes

Symptoms

Recommended Solution

Workflow

Mechanic's Tip

Do you also have
other fault codes?

P0022 - Camshaft Position 'B' - Timing Over-Retarded (Bank 2)

Related Fault Codes

Technical Description

Possible Causes

Symptoms

Recommended Solution

Workflow

Mechanic's Tip

Do you also have other fault codes?

Do you also have
other fault codes?