Tag Archives: P0303

2000 Audi A6 V8 Check Engine Light. Audi Check Engine Light Codes: P0300, P0301,P0302, P0303, P0304, P1114, P1340. Camshaft Position Sensor Signal Out of Sequence

2000 Audi A6 V8 Check Engine Light. Audi Check Engine Light Codes: P0300, P0301,P0302, P0303, P0304, P1114, P1340. Camshaft Position Sensor Signal Out of Sequence

We received a 2000 Audi A6 V8 with a Check Engine Light on. The vehicle did have a rough idle. We downloaded the codes and found codes: P0300, P0301,P0302, P0303, P0304, P1114, P1340. We noticed that all the miss fires where on the passengers' side of the vehicle. We recommended removal of the valve covers and inspection of the camshaft chain adjusters. We found that the passengers' camshaft chain adjuster had completely failed. And that the drives' side adjuster was weak and about to fail. The customer was extremely luck that the the drivers' side camshaft timing chain had only jumped one tooth. If it had come off, major valve and possibly engine damage would have occurred. We replaced both camshaft timing chain adjuster and since the timing belt has to be removed to remove the cam shafts and the cam shafts have to be removed to remove the cam shaft adjusters. We recommended replacement of the timing, belt, water pump, idlers and tensioner while the vehicle was apart ... read more

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Audi Repair Blog

Mini Cooper Miss Fire | Rough Idle In The Morning | When Cold. Miss Fire Codes P0300, P0301, P0302, P0303, P0304

Mini Cooper Miss Fire | Rough Idle In The Morning | When Cold. Miss Fire Codes P0300, P0301, P0302, P0303, P0304

Does you Mini Cooper set a miss fire code or have a flashing check engine light when it starts up cold, in the morning? Usually code(s) P0300, and one or all of the following will set: P0301, P0302, P0303, P0304. It is most likely carbon build up in the intake valves (see picture below). With the advent of direct injection fuel systems, we have seen a epidemic carbon build up issues. With carburetor or convention fuel injection the fuel came in contact with with the intake valves while it is entering the cylinder. The additives in the fuel would help clean the carbon form the intake valve stems. With Direct Injection Fuel Systems the fuel is injected directly into the cylinders, thus leaving the intake valves susceptible to excess carbon build up. The solution: perform an Induction Service every 15,000 miles to p ... read more

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