Code P0024 – Camshaft Position “B” – Timing Over-Advanced or System Performance (Bank 2)
What does code P0024 mean?
The generic diagnostic code (DTC) P0024 is a powertrain-related code that applies to most OBD-II equipped vehicles (Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc.). It indicates a problem with the Variable Valve Timing (VVT) or Variable Camshaft Timing (VCT) system, specifically an over-advanced timing of camshaft “B” on engine bank 2. This system, managed by the Powertrain Control Module (PCM), optimizes engine power and efficiency. Camshaft “B” typically refers to the exhaust camshaft or the right/rear camshaft. Bank 2 is the side of the engine that does not contain cylinder number 1.
Symptoms of code P0024
When this fault is present, several symptoms may appear:
- Hard engine starting
- Rough or unstable idle
- Engine stalling
- Decreased performance and fuel efficiency
- Illumination of the Malfunction Indicator Lamp (MIL) on the dashboard
Possible causes of the fault
Several factors can cause a P0024 code:
- Incorrect camshaft timing
- Wiring or connector issue at the VVT control solenoid
- Insufficient or interrupted engine oil flow to the VCT piston chamber
- Faulty VVT solenoid (stuck in open position)
- Poor quality engine oil or insufficient oil level
Solutions and troubleshooting
Since code P0024 is often related to a mechanical or hydraulic failure, electrical diagnosis alone may be insufficient. Here are the recommended steps:
- Check the engine oil level and quality: Low level or degraded oil can affect the VVT system operation.
- Inspect the wiring and connectors of the bank 2 VVT solenoid for possible damage or corrosion.
- Test the VVT solenoid using a diagnostic tool to verify its operation. A stuck solenoid should be replaced.
- Check the power supply voltage of the solenoid to ensure it meets manufacturer specifications.
- Consult a vehicle-specific repair manual for detailed testing procedures on VCT/VVT components.
Note: Due to the system’s complexity, it is often recommended to seek assistance from a professional technician with advanced diagnostic tools.
Call to action
Code P0024 should not be ignored, as it can lead to premature engine wear and increased fuel consumption. If you are not comfortable with these procedures, consult a qualified mechanic for accurate diagnosis and reliable repair.