P0025 — Camshaft timing too far delayed on bank 2

The engine's camshaft timing on bank 2 is delayed beyond the expected range. This usually happens because the variable valve timing system is not adjusting properly, which can affect engine performance and efficiency.

Common causes

The cause is almost always one of a few things. Here they are — P0025 rarely comes from anything outside this list:

• Faulty camshaft position actuator or solenoid
• Low or dirty engine oil affecting timing control
• Worn or damaged timing chain or components
• Faulty camshaft position sensor
• Engine control unit software issue

Where to start

In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:

1. Check and replace engine oil if dirty or low
2. Inspect and test camshaft position sensor
3. Test and replace camshaft timing solenoid if faulty
4. Inspect timing chain and related components for wear
5. Replace camshaft actuator or repair timing system if needed

That is what holds for P0025 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.