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My check engine went on and i had the codes checked had a needed to replace my oxygen sensors, so i changed all 4 of them and cleared the codes. 2 days later i get a check engine light again and the new code is Camshaft adjustment 1325.

Any imput would be appreciated. By the way I have a 99 C4 with 60K miles.

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All 4 oxygen sensors bad at one time - not very likely.

Please tell us exactly all the codes (previous also if you remember).

Originally it started when I put in one of these K&N air intakes and got the ABS and PSM lights to go on. At that time I was going to change the MAF sensor but a friend of mine that works at Porsche told me to change back to the old air intake. So I did and that took care of the problem. Then a few weeks after that the cel light went on again and the codes were Bank 1 Sensor, Bank 2 Sensor on the right side. Don't remember the exact code, but the guy who ran the codes told me just to change all 4. So I did.

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Clear the current code and see if it returns. When a code is present it doesn't always mean that sensor or component has failed and never drive the vehicle if the check engine is flashing as serious damage to the engine or emission system can result.

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