2001 Audi A4 02 SENSORS

HAKEEM2010

MEMBER
2001 AUDI A4
6 CYL
AWD
AUTOMATIC
146,000 MILES

MY CHECK ENGINE LIGHT IS ON, THREE CODES ARE THERE. THEY ALL ARE SAYING THAT THE 02 SENSORS ARE BAD, AND THE CAT. I HAVE FOUR. WHAT WOULD CAUSE ALL OF THEM TO GO BAD. WHAT CAN I DO TO FIX THE PROBLEM, ALSO THE CAR Hesitates WHEN DRIVING, AND RUNS ROUGH AT IDLE. ALSO IT FEELS LIKE THE ENGINE IS SKIPPING. The codes are P0150-- P0420---and---P0430

3 Replies

RACEFAN966

MECHANIC
5,029 POSTS

Ok they probably aren't all bad but without the codes I can't tell you what all the car is trying to tell us. So if you can get me the codes so I can look them up and give the needed advice from there. These cars are also know for having coil problems that will lean out the system too. So get me those codes and we will take it from there.

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Friday, April 2nd, 2010 AT 10:45 AM

HAKEEM2010

MEMBER
2 POSTS

MY CHECK ENGINE LIGHT IS ON, THREE CODES ARE THERE. THEY ALL ARE SAYING THAT THE 02 SENSORS ARE BAD, AND THE CAT. I HAVE FOUR. WHAT WOULD CAUSE ALL OF THEM TO GO BAD. WHAT CAN I DO TO FIX THE PROBLEM, ALSO THE CAR Hesitates WHEN DRIVING, AND RUNS ROUGH AT IDLE. ALSO IT FEELS LIKE THE ENGINE IS SKIPPING. The codes are P0150-- P0420---and---P0430

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Saturday, April 3rd, 2010 AT 11:24 PM

RACEFAN966

MECHANIC
5,029 POSTS

OK the codes tell me that there is an electrical malfunction with the bank 2 sensor 1. This sensors heating is malfunctioning this could also be what is setting off the other codes too. So what it say's is to check with a scan tool and if it is not in spec replace it. Bank 2 is the oposite side of where number 1 cylinder is at. So with the engine sitting in there sideway's it is the side closed to the front of the car and sensor 1 is the one in the exhaust that is before the cat. Let me know how things go

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Tuesday, April 6th, 2010 AT 9:25 AM