The P0015 trouble code indicates that the car’s powertrain control module (PCM) has detected a difference in the actual camshaft position angle and the required camshaft position angle. This article mainly explains the P0015 code meaning, symptoms, and causes.
P0015 Code Definition
The P0015 code stands for Exhaust Camshaft Position “B” – Timing Over-Retarded (Bank 1).
What does the P0015 Code Mean?
The P0015 code indicates that the powertrain control module (PCM) has detected that the exhaust camshaft timing for Bank 1 is more retarded than what the PCM has commanded it to be. The over-retarded timing condition can be during the advancing or retarding phase.
This code is related to an issue with the variable valve timing system. A variable valve timing solenoid is also known as an oil control valve (OCV). This system improves engine performance and fuel economy by adjusting the closing and opening timing of the exhaust valve and intake valve.
The P0015 code will be triggered when the PCM detects that your vehicle’s camshaft timing is over-retarded.
Causes of the P0015 Code
The following are the major causes that trigger the P0015 code:
- Bank 1 camshaft oil control solenoid valve may be stuck in the open position.
- The oil control valve has an open circuit, or the PCM has an open circuit.
- A bad camshaft position sensor
- Bad VVT actuator (phaser)
- Incorrect oil viscosity
- Insufficient or dirty engine oil
- The oil viscosity is too high and is blocking the passages, restricting oil flow to or from the camshaft phaser.
- Bad or damaged Variable Camshaft Timing Solenoid Valve
- Worn timing belt or timing chain
- An issue with the PCM
Read More: Bad PCM Symptoms and Causes
Symptoms of the P0015 Code
- Illuminated check engine light
- Your engine may face hard start issues and low power conditions due to the retarded timing position.
- Failed emission test
- Engine misfiring
- Poor engine performance
- Knocking/Rattling from the engine
- Engine stalling
- Poor fuel economy
Read More: Bad Oil Control Valve Symptoms and Causes
Common P0015 Code Diagnosis Mistakes
It is essential to avoid these mistakes when diagnosing or fixing error code P0015:
- Not properly interpreting the freeze frame data in relation to when the code was set.
- Overlooking the related codes and just focusing on the P0015 engine code.
- Not inspecting the connectors and wiring harnesses to confirm they are not corroded.
- Replacing the unnacessary parts.
How to diagnose the P0015 Code?
You must have the following tools to diagnose or fix the P0015 code:
- Fused jumper wires
- Basic hand tools
- OBDII scan tool
- Specific car service manual
Follow the below-given steps to diagnose the P0015 code:
- Run a scan check, check for other codes with P0015, and clear the engine warning light with a scan tool.
- Ensure the connections and wiring between the OCV and your printer are in good working order.
- Use a dipstick to inspect the level and condition of the engine oil. If your car has insufficient oil, add more oil and road-test the car to confirm the problem has been corrected.
- Loosen hood screws and check the engine for deposits. If it contains sludge, the oil passages are clogged with debris, and the engine needs to be disassembled and flushed.
- Inspect the oil filter and replace it if needed.
- Scan and document engine codes and view the freeze frame data to see when the code was set.
- Reset the check engine light and road test again to see if the code returns.
- Command the OCV on and off with the scan tool to see if the camshaft timing changes
- Perform the manufacturer’s tests for the P0015 code.
Note: You must follow the recommended pinpoint tests of the manufacturer to narrow down the issue because each engine may be tested differently.
P0015 Code Repair Cost
To fix or repair the P0015 code, you may need one or more of the following repairs. These prices are based on national averages and include parts and labor. Your cost may vary according to your area, vehicle model, and labor cost.
| Parts | Cost |
|---|---|
| Engine | $2900 to $4100 |
| OCV replacement | $320 to $410 |
| Oil Change | $50 to $70 |
What repairs can fix the P0015 code?
One or more of the following repairs can fix the P0015 code:
- Resetting the fault codes and performing a road test
- Replacing the bad camshaft-phasers on both camshaft banks
- Fixing the damaged wiring or connections to the camshaft OCV
- Replacing the bad camshaft oil control valve for the bank 1 exhaust camshaft
- Replacing the damaged timing belt
- Check the engine oil level and condition, and add more oil if needed.
- Replacing the oil filter
- Adjusting the engine timing
- Replacing the damaged catalytic converter
FAQ Section
How serious is the P0015 code?
A P0015 code does not mean that the vehicle will break down or stop running. However, it does affect your engine’s power and fuel economy. This code increases fuel consumption and can lead to carbon deposits on pistons and engine valves. If you drive the car with the camshafts retarded for a long time, additional internal engine issues may develop, beginning with stalling and rough running.
Where is the B camshaft position sensor?
The camshaft position sensor notes the rate at which the camshaft is spinning and helps the car’s computer control things like fuel injection and engine timing. Note that the “B” means that this sensor is located on the exhaust side of the cylinder head.
What are the symptoms of P0015 BMW?
- Illuminated check engine light
- Hard to start the engine
- Failed emission test
- Engine misfiring
- Poor engine performance
- Knocking/Rattling from the engine
- Engine stalling
- Higher exhaust emissions
- Poor fuel economy