P0024 Exhaust Camshaft Position Timing Over-Advanced Bank 2

P0024 means the exhaust camshaft timing on bank 2 is more advanced than expected. It can be caused by oil control, actuator sticking, phaser behavior, or mechanical timing.

Code details

Generic OBD-II · P0

System: Fuel / Air
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not ignore bank 2 cam timing faults; they can affect idle quality, emissions, catalyst monitoring, and power delivery.

Symptoms of P0024

Check-engine light on, sometimes with rough or uneven running.
Hesitation, surging, or a noticeable change in fuel economy.
Occasionally hard starting or a smell of unburnt fuel.

Common causes of P0024

A failing or contaminated sensor (MAF, MAP, oxygen or air-fuel sensor).
Intake or vacuum leaks, or an exhaust leak near an upstream sensor.
Wiring, connector, or fuel-delivery problems that skew the reading.

Useful checks before replacing parts

Review oil service history and verify oil level, viscosity, and contamination before condemning hardware.
Compare commanded and actual bank 2 exhaust cam timing while watching for a cam that remains advanced.
Inspect actuator solenoid operation, phaser response, timing-chain condition, and cam/crank correlation data.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and pin down the fault area.