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I have a 06 VW GTI 1.8T that I've been having some issues with as far as the P300 codes. All four continually pop up every week. I've changed the spark plugs, coil packs, and just got a oil change and changed the fuel filter. I just went to get my yearly inspection and failed for emissions. The mechanic said that the On-Board Diagnostic test came up that the "catalyst monitor," "Evaporative System Monitor," and "O2 Sensor Monitor" ass read as "not supported"

I was reading up on the problem and I saw that it might be the wiring kit for the coils, or the fuel pump.

Any suggestions? This is getting irratating and I'm just hopeing I didn't luck out with a camshaft dud engine.

Any information would be greatly appreciated.

Lauren
 
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