P0015 Code- Camshaft Position 'B' Timing Over-Retarded Bank 1

What Does Code P0015 Mean

P0015 is the OBD-II generic code indicating the engine control module (ECM) has determined that the exhaust camshaft timing for bank 1 is more retarded than what the ECM has commanded it to be. The over-retarded timing condition can be during the advancing or retarding phase.

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Possible symptoms

• Engine Light ON (or Service Engine Soon Warning Light)

Possible causes

• Dirty Oil
• Variable Valve Timing (VVT) circuit is open or shorted
• Oil Control Valve (OCV) circuit is open or shorted
• Faulty variable valve timing (VVT)
• Faulty oil control valve (OCV)
• Damaged ECM

Troubleshooting P0015

TOOLS:
Whenever you are working with systems, some of the basic tools you will need are:

• OBD code reader
• Multimeter
• Basic socket set
• Basic ratchet and wrench sets
• Basic screwdriver set
• Rag/shop towels
• Battery terminal cleaner
• Service manual

SAFETY STEPS:

• Let engine cool
• Chalk wheels
• Wear PPE (Personal protective equipment)

BASIC STEP #1:
Check your oil. A lot of times problems within the VVT system may be caused by dirty oil. Your camshaft timing is controlled via oil pressure. Check when the last time you changed the oil was. If you have been running on same oil for more the 10-15k, forget about continuing. If you do not know when you changed the oil last, visually inspect the oil. If it isn’t somewhat clear in colour, replace oil and filter. It is very possible that this is the cause of the issue. Make sure to use manufacturer’s specific oil rating.

BASIC STEP #2:
Pop the hood and locate the camshaft position sensor. Most of the time you can find the sensor located at one of the ends of the camshaft(s). Once located, look for any signs of physical damage or leaking oil from sensor. If everything is good, look at the electrical connections themselves for signs of loose connections or corrosion around the plug(s). It’s a good idea to identify the wiring harness and follow it as far as you can, inspecting for chafes or cuts in wires themselves. Most of the time, wiring issues like these are difficult to pinpoint. NOTE: These harness’ typically run along the valve cover so it exposed to heat! Perform any necessary repairs, clear codes and test drive vehicle.

BASIC STEP #3:
Check your timing. You will definitely want to refer to service manual to check your camshaft timing as every manufacturer varies. If you can access the timing cover, you may be able to remove and inspect timing marks. For the most part, these procedures get pretty invasive, you may want to bring to reputable facility at this point. If you do not, you may end up with an out of time engine that no longer runs.

BASIC STEP #4:
Check the Camshaft timing control valve. Depending on the manufacturer, you may be able to easily access the valve. If so, and it is a 2-wire, you can check for resistance between the pins. This heavily varies so please refer to service manual to get specific procedures and desired values. If everything looks ok, bring to repair facility and let them figure it out.

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