P0015 Fault Code

P0015 OBD-II Trouble Code Short Description

"B" Camshaft Position -Timing Over-Retarded (Bank 1)

What does trouble code P0015 mean?

The P0015 fault code refers to "B" Camshaft Position - Timing Over-Retarded on Bank 1. This means that the engine control module (ECM) has detected that the camshaft position on bank 1 is over-retarded compared to the desired timing.

The camshaft is responsible for controlling the opening and closing of the engine's intake and exhaust valves. It needs to be properly synchronized with the crankshaft to ensure efficient engine operation.

There are a few potential causes for this fault code, including:

  1. Timing belt or chain: If the timing belt or chain is worn or stretched, it can affect the synchronization between the camshaft and crankshaft. This can result in the camshaft position being over-retarded.

  2. Camshaft position sensor: A faulty camshaft position sensor can provide incorrect readings to the ECM, leading to inaccurate timing control.

  3. Engine oil issues: If there is a problem with the engine oil, such as low oil level, dirty oil, or a clogged oil passage, it can affect the timing control of the camshaft.

To diagnose and resolve the P0015 fault code, the following steps may be necessary:

  1. Inspection of the timing belt or chain: This involves checking for wear, stretching, or any signs of damage. If necessary, it may require replacement.

  2. Testing the camshaft position sensor: The sensor should be checked for proper operation using a scan tool or multimeter. If it is faulty, it will need to be replaced.

  3. Checking engine oil: The oil level and condition should be inspected. If necessary, an oil change and proper maintenance should be performed.

It is recommended to consult a qualified mechanic or dealership to accurately diagnose and fix the issue related to the P0015 fault code. Fixing the underlying problem will help to ensure proper engine performance and prevent potential damage.


What are the symptoms of the P0015 code?

The P0015 fault code indicates a problem with the "B" camshaft position, specifically the timing being over-retarded on Bank 1. This fault code can lead to various symptoms including:

  • Check Engine Light: The most common symptom is the illumination of the Check Engine Light on the dashboard.

  • Poor engine performance: The vehicle may experience a decrease in power, acceleration, and overall performance.

  • Rough idling: The engine may idle irregularly or have a rough idle, which can result in shaking or vibrations.

  • Misfires: The engine may experience misfires, where the cylinders do not fire in the correct sequence, leading to a rough running engine.

  • Increased fuel consumption: The vehicle may consume more fuel than usual due to the improper timing of the camshaft.

  • Difficulty starting: A prolonged crank or difficulty starting the engine can occur.

It is important to diagnose and fix the issue causing the P0015 fault code to prevent further damage to the engine and restore optimal vehicle performance. Consulting a professional mechanic is recommended for proper diagnosis and repair.


What causes the P0015 code?

When the error code P0015 is detected on a car, it indicates a problem with the "B" camshaft position timing being over-retarded on Bank 1. This fault code can have several possible causes, including:

  1. Camshaft Timing: The timing of the camshaft on Bank 1 may be incorrect due to a mechanical issue, such as a worn or stretched timing chain/belt, damaged timing gears, or a malfunctioning camshaft actuator.

  2. Camshaft Actuator: The actuator responsible for controlling the camshaft position on Bank 1 may be faulty or sticking, causing the timing to be over-retarded.

  3. Oil Flow/Pressure: Insufficient oil flow or low oil pressure can hinder the operation of the camshaft actuator, leading to timing issues and triggering the P0015 code.

  4. Wiring/Connector Problems: Faulty or damaged wiring harnesses and connectors related to the camshaft position sensor or actuator can disrupt the signal and cause timing problems.

  5. Engine Control Module (ECM): In rare cases, a malfunctioning ECM can send incorrect signals to the camshaft actuator, resulting in timing issues.

To diagnose and resolve the P0015 fault code, it is recommended to perform a thorough inspection of the camshaft timing components, check the operation of the camshaft actuator, test oil flow and pressure, and examine the wiring and connectors for any faults. In some cases, resetting the fault code may be necessary after addressing the underlying issue.

Possible Solutions

How to fix P0015?

In order to fix the P0015 fault code, you can try the following steps:

  1. Check oil levels: Ensure that your engine has enough oil and that it is not contaminated. Low oil levels or dirty oil can affect the proper functioning of the VVT system.

  2. Inspect the VVT solenoid: Bank 1's VVT solenoid could be the culprit. Inspect it for any signs of damage or clogging. Clean or replace the solenoid if necessary.

  3. Inspect the camshaft position sensor: If the camshaft position sensor is faulty, it can cause the P0015 code. Inspect the sensor for any physical damage or signs of malfunction. Replace it if needed.

  4. Check timing belt or chain: A worn or loose timing belt/chain can lead to incorrect camshaft timing, triggering the P0015 code. Inspect the timing components and replace them if required.

  5. Reset the fault code: After performing the necessary repairs, you will need to clear the fault code from the vehicle's computer system. Use an OBD-II scanner or disconnect the battery for a few minutes to reset the code.

If you are not confident in diagnosing and fixing the issue yourself, it is recommended to consult with a qualified mechanic or automotive technician for further assistance. They will have the necessary tools and expertise to accurately diagnose and repair the problem.