2001 Volvo S40 Q&A
2001 Volvo S40 Question: Engine-Light came on. Diagnosis Code P0015 found. Then Light went out by itself.
The local shop that diagnosed Code P0015 talked about timing problem and said only Volvo dealership has a computer that can fix the problem. The Engine-light went out by itself when I started the car, but may come back on again perhaps. What exactly is this problem in plain English and how much should it cost approximately to have it at a Volvo dealership? My thanks in advance. - Yeadonner
You don't have to take your Volvo to a Volvo dealer. Just because they sell it doesn't mean they are the only ones that can work on it. The procedure for testing that you read next is something a seasoned Tech can perform. May I make a strong suggestion in the type of lubricant(engine oil) that you use. Use a full synthetic like Amsoil or Mobile 1. You will have no sludging of the lubricant hence not having the problem you are having. I suspect you have a bad Varible Valve Timming Actuator do to sludging of the oil that you are using. This really is not a difficult repair to diagnose. Customer Concern: Malfunction Indicator Light (MIL) is on. Code P0015 (ECM-61) stored. Tests/Procedures: 1. Check cam timing. Check belt condition. 2. Remove the reset valve, actuate it and check for its actual opening and closing. Check resistance of the valve, spec is 7 ohms. Also ensure the wiring going to the valve is not pinched by one of the spark plug cover bolts. 3. Look for sludge and deposits inside of it and clean as necessary. 4. Check for oil pressure coming to the reset valve during cranking and for good oil pressure overall. 5. If the previous tests are all good, the VVT mechanism/actuator (exhaust cam gear) on the camshaft may be sticking or otherwise non-functional. Replacement of this part will require cam holding tools as there is no indexing or keyway that holds the cam gear to the camshaft. It is a slip fit. Tech Tips: The camshaft reset valve, on the rear of the passenger's end of the engine, supplies oil pressure to the Variable Valve Timing (VVT) mechanism that acts on the exhaust cam. P0015 - ECM-61 - Camshaft reset valve, faulty signal. If you would like to contact me email me at email@example.com - PARTS GUY