I JUST GOT A DIAGNOSTIC REPORT FOR OBD PO422 INDICATING PROBABLE CAUSES, RICH AIR /FUEL RATIO ,AIR LEAK NEAR REAR HO2S > OR FAULTY FUEL CONTROL HO2S = HEATED OXYGEN SENSOR WHAT DOES THAT MEAN AND CODE PO304 WHICH INDICATES CYLINDER 4 MISFIRE IGNITION SYSTEM FAULT ,FUEL INJECTOR FAULT SO WHAT DOES ALL THAT MEAN AND HOW MUCH WILL IT COST ME?
OBD CODE P0422 AND PO304 on 2000 Volkswagen Jetta
by mackie in Staten Island, NY on May 27, 2011
ANSWER by chinasinoy on May 27, 2011
Hi, I knew a VW professional tool, which is U281, and it can read and erase trouble code in VW car. it is cheaper and you can DIY.