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.

SEV: 3/5
DRIVE: CAUTION
DIY: $20–$250
SHOP: $150–$1200

Quick answer

AI-CITATION READY

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.

Can you drive with it?

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.

Most common causes

Low, dirty, or incorrect engine oil affecting variable valve timing operation
Faulty oil control valve / VVT solenoid on Bank 2
Stuck or failing cam phaser on Bank 2

Typical repair cost

DIY usually runs $20–$250. Typical shop repair lands around $150–$1200, depending on the root cause.

01 / Definition

02 / Drive status

03 / 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

04 / Causes

1	Low, dirty, or incorrect engine oil affecting variable valve timing operation	high
2	Faulty oil control valve / VVT solenoid on Bank 2	high
3	Stuck or failing cam phaser on Bank 2	medium
4	Wiring damage, poor connector contact, or corrosion at the VVT solenoid or cam sensor	medium
5	Camshaft position sensor problem on Bank 2	medium
6	Engine mechanical timing issue such as stretched timing chain, worn tensioner, or jumped timing	medium
7	PCM software issue or failed PCM driver, less common	low

05 / Diagnostic sequence

01Check engine oil level, condition, and service history. Correct low oil or oil that is dirty or the wrong viscosity.
02Scan for related codes such as cam sensor, crank sensor, oil control valve, VVT, misfire, or oil pressure codes.
03Inspect wiring and connectors for the Bank 2 camshaft sensor and VVT solenoid for damage, corrosion, loose pins, or oil intrusion.
04Use a scan tool to compare commanded cam timing to actual cam timing on Bank 2 and watch whether the reading responds normally.
05Test the Bank 2 VVT solenoid and oil control valve for proper operation and filter screen blockage if equipped.
06Check camshaft position sensor signals and power/ground circuits if data looks unstable or implausible.
07If the system still fails, inspect mechanical timing components for chain stretch, worn guides, a weak tensioner, or a slipped timing setup.
08Clear the code and road test after repair to confirm cam timing follows commands and the code does not return.

06 / Repairs

1	Change engine oil and filter with the correct specification if oil is dirty, low, or incorrect.	$40–$120
2	Clean or replace the Bank 2 VVT solenoid / oil control valve and repair related connector or wiring issues.	$50–$300
3	Replace a faulty Bank 2 camshaft position sensor or repair its circuit.	$80–$250
4	Replace a stuck or worn cam phaser if commanded timing does not respond correctly.	$300–$900
5	Repair mechanical timing issues such as a stretched chain, bad tensioner, or worn guides.	$600–$1200

07 / Related codes

08 / 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.

09 / Source and method

DATA BASIS: OBD-II REFERENCE + OBD2.HELP
METHOD: STATIC VALIDATION
SAFETY: INFORMATIONAL

This page combines OBD-II diagnostic reference data with OBD2.help generated diagnostic guidance for code meaning, likely causes, and repair direction.

Publishing uses deterministic schema and build validation, plus manual spot checks on representative pages before release.

Safety-critical diagnosis and repairs should be confirmed with a qualified mechanic, especially when the vehicle is misfiring, overheating, or losing power.

01 / Definition

04 / Causes

Low, dirty, or incorrect engine oil affecting variable valve timing operation

high

Faulty oil control valve / VVT solenoid on Bank 2

high

Stuck or failing cam phaser on Bank 2

medium

Wiring damage, poor connector contact, or corrosion at the VVT solenoid or cam sensor

medium

Camshaft position sensor problem on Bank 2

medium

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

medium

PCM software issue or failed PCM driver, less common

low

05 / Diagnostic sequence

01Check engine oil level, condition, and service history. Correct low oil or oil that is dirty or the wrong viscosity.

02Scan for related codes such as cam sensor, crank sensor, oil control valve, VVT, misfire, or oil pressure codes.

03Inspect wiring and connectors for the Bank 2 camshaft sensor and VVT solenoid for damage, corrosion, loose pins, or oil intrusion.

04Use a scan tool to compare commanded cam timing to actual cam timing on Bank 2 and watch whether the reading responds normally.

05Test the Bank 2 VVT solenoid and oil control valve for proper operation and filter screen blockage if equipped.

06Check camshaft position sensor signals and power/ground circuits if data looks unstable or implausible.

07If the system still fails, inspect mechanical timing components for chain stretch, worn guides, a weak tensioner, or a slipped timing setup.

08Clear the code and road test after repair to confirm cam timing follows commands and the code does not return.

06 / Repairs

Change engine oil and filter with the correct specification if oil is dirty, low, or incorrect.

$40–$120

Clean or replace the Bank 2 VVT solenoid / oil control valve and repair related connector or wiring issues.

$50–$300

Replace a faulty Bank 2 camshaft position sensor or repair its circuit.

$80–$250

Replace a stuck or worn cam phaser if commanded timing does not respond correctly.

$300–$900

Repair mechanical timing issues such as a stretched chain, bad tensioner, or worn guides.

$600–$1200

08 / 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.

09 / Source and method

DATA BASIS: OBD-II REFERENCE + OBD2.HELP
METHOD: STATIC VALIDATION
SAFETY: INFORMATIONAL

This page combines OBD-II diagnostic reference data with OBD2.help generated diagnostic guidance for code meaning, likely causes, and repair direction.

Publishing uses deterministic schema and build validation, plus manual spot checks on representative pages before release.

Safety-critical diagnosis and repairs should be confirmed with a qualified mechanic, especially when the vehicle is misfiring, overheating, or losing power.