What causes fault code P0014?

• Most likely: Dirty engine oil or restricted oil passages in the VVT unit • Likely: Faulty VVT solenoid (mechanically stuck or electrical failure) • Possible: Incorrect engine oil viscosity • Rare: Worn camshaft phaser or skipped timing belt/chain

How do you fix fault code P0014?

STEP 1: Check engine oil level and condition. If oil is dirty or overdue, perform an oil and filter change immediately. STEP 2: Inspect the VVT solenoid electrical circuit. Measure coil resistance (typically 7-12 Ohms). Verify 12V power supply and PWM ground signal from ECM. STEP 3: Use a scan tool to perform an active test of the solenoid. If the engine idle does not change, remove the solenoid and inspect for debris or sludge. STEP 4: Replace the solenoid if mechanically stuck. If the fault persists, inspect the camshaft phaser and verify base timing of the belt or chain.

Powertrain (Engine & Gearbox)Standard EOBD

P0014 - Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)

Q: What are the symptoms of fault code P0014?

• Check engine light (MIL) illuminated • Rough idle or engine stalling when stopping • Reduced engine performance and increased fuel consumption • Rattle or knocking noise from the upper engine area • Failed emissions test

Last updated:1 February 2026

Related:VVT-solenoid, Phaser, CMP, Motorolja & Oljefilter, Engine Control Unit (ECU)

System

Powertrain (Engine & Gearbox)

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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

P0014 is set when the Engine Control Module (ECM) detects that the exhaust camshaft timing on Bank 1 is excessively advanced beyond the commanded setpoint. The Variable Valve Timing (VVT) system relies on engine oil pressure modulated by a Pulse Width Modulated (PWM) solenoid to rotate the camshaft phaser. If the actual camshaft position, as reported by the Camshaft Position (CMP) sensor, remains more advanced than target for a calibrated duration, the DTC is stored. This fault impacts volumetric efficiency, NOx emissions, and may trigger a reduced power mode to prevent engine damage.

Possible Causes

Dirty engine oil or restricted oil passages in the VVT unit

Faulty VVT solenoid (mechanically stuck or electrical failure)

Incorrect engine oil viscosity

Worn camshaft phaser or skipped timing belt/chain

Symptoms

Check engine light (MIL) illuminated

Rough idle or engine stalling when stopping

Reduced engine performance and increased fuel consumption

Rattle or knocking noise from the upper engine area

Failed emissions test

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P0014 - Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)

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P0014 - Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)

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