This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.
Definition
P0024 is an OBD-II Code that refers to Camshaft Position B - Timing Over-Advanced or System Performance (Bank 2)
Meaning
A P0024 code is a general diagnostic trouble code that occurs when the ECM/PCM detects that the camshaft position sensor signal is not synchronizing with the crankshaft position sensor signal, or that there is an issue with the timing chain/belt. When this occurs, the ECM/PCM will store the fault data, set the fault code P0024 and turn on the check engine light.
Causes
Common causes for this code include:
- The engine oil is of incorrect viscosity
- The engine oil is too low
- Engine oil might be contaminated or dirty
- Continuous oil flow to Variable Camshaft Timing chamber
- Camshaft variable timing solenoid failure
- Camshaft phaser is seized in the advanced position
Symptoms
The symptoms of a P0024 code are:
- Illuminated Check Engine Light
- Engine hard start
- Engine runs rough
- Stalling
- Rattling/Knocking from engine
- Poor fuel economy
- Failed emissions test
Diagnosis
To diagnose a P0024 DTC code, a technician would:
- Scan for codes in the ECM and look at the freeze frame data for failure.
- Visually inspect all related wiring and connectors.
- Inspect the oil level and condition.
- Test the camshaft position sensor signal with a multimeter.
- Check for any loose or damaged timing chain/belt components.
- Inspect Variable Camshaft Timing components for any debris or blockage.
- Depending on the results of these tests, the technician would then proceed with the appropriate repairs.
Common mistakes
The following are some of the most common mistakes that a technician may make when diagnosing a P0024 code:
- Not thoroughly inspecting all the wiring and connectors for damage.
- Not checking the oil level and condition.
- Not testing the camshaft position sensor signal with a multimeter.
- Not checking for any loose or damaged timing chain/belt components.
How serious is this?
A P0024 code is a serious code because it can cause engine damage if not repaired in a timely manner.
What repairs can fix the code?
The following are solutions that may fix this problem:
- Clearing and retesting to verify the fault codes and performing a road test
- Changing the oil and filter to the proper oil viscosity per the engine's specifications
- Repairing or replacing the wiring to the camshaft oil control valve for bank 2 exhaust camshaft
- Replacing the camshaft OCV for bank 2 exhaust camshaft
Related codes
A P0024 is related to and may be accompanied by the following codes:
P0010 - Camshaft Position Actuator Circuit (Bank 1)
P0011 - Timing Over-Advanced or System Performance (Bank 1)
P0012 - Timing Over-Retarded (Bank 1)
P0013 - Exhaust Valve Control Circuit Open (Bank 1)
P0014 - Exhaust Valve Control Performance (Bank 1)
Conclusion
In conclusion, the P0024 code is a diagnostic trouble code that refers to a problem with the camshaft position sensor signal not synchronizing with the crankshaft position sensor signal, or an issue with the timing chain/belt. If you see this code, be sure to have your vehicle checked out by a professional technician as soon as possible to avoid further engine damage.