P0024

B Camshaft Timing Over-Advanced Bank 2

The engine computer sees the camshaft timing on bank 2 too far advanced. This usually means the timing control system, oil flow, or cam phaser is not working correctly. It can cause rough running, loss of power, and poor fuel economy.

Severity3/5 Moderate

Can I drive?⚠ With caution

You may be able to drive short distances, but engine performance can be reduced and the problem can get worse. If the engine runs rough, stalls, or makes abnormal noise, do not keep driving.

DIY

$20–$250

Shop

$150–$1200

Difficulty

intermediate

What It Means

P0024 indicates the PCM has detected that the Bank 2 camshaft timing for camshaft 'B' is more advanced than expected, or that the system is not responding correctly. On many engines, this refers to the exhaust cam on Bank 2 with variable valve timing. The fault can be caused by oil control issues, a stuck cam phaser, wiring problems, or a mechanical timing issue.

Symptoms

•Check engine light
•Rough idle
•Reduced power
•Poor fuel economy
•Hard starting
•Engine hesitation or sluggish acceleration
•Possible ticking, rattling, or timing chain noise
•Engine may stall at idle in some cases

Common Causes

1. Low, dirty, or incorrect engine oil affecting variable valve timing operationhigh

2. Faulty oil control valve / VVT solenoid on Bank 2high

3. Stuck or failing cam phaser on Bank 2medium

4. Wiring damage, poor connector contact, or corrosion at the VVT solenoid or cam sensormedium

5. Camshaft position sensor problem on Bank 2medium

6. Engine mechanical timing issue such as stretched timing chain, worn tensioner, or jumped timingmedium

7. PCM software issue or failed PCM driver, less commonlow

FAQ

What does Bank 2 mean?

Bank 2 is the side of the engine that does not contain cylinder number 1.

Is P0024 usually caused by bad oil?

Yes. Low oil, dirty oil, or the wrong oil viscosity is one of the most common causes because the VVT system uses engine oil pressure.

Can a bad cam phaser cause this code?

Yes. A stuck or worn cam phaser can make the cam timing stay too advanced and trigger P0024.

Will clearing the code fix the problem?

No. The code will usually return unless the underlying oil, electrical, or mechanical fault is repaired.