Engine Check Light On - P1128 and P1130

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09-15-2007, 04:43 PM

AudiLover75

Thread Starter

Join Date: Aug 2007

Posts: 2

Engine Check Light On - P1128 and P1130

Hi All,
I bought my first Audi, its a 2000 4.2 A6. After I had driven the car a 1000 miles the check Engine Light turned on. I got it diagnosed and found that the the Error Codes are :

P1128 Heated Oxygen Sensor Signals reversed.
P1130 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank No. 1.

My question is what is the cause of these codes and how can I fix them. Also is this something which requires immediate attention? And any rought estimate as to how much it will cost to fix these?

Any help will be appritiated.

-Thanks

11-05-2007, 04:07 PM

betes

Senior Member

Join Date: Aug 2007

Location:

Posts: 270

RE: Engine Check Light On - P1128 and P1130

Hey its your o2 sensors so you need to get them replaced and the second one is there is a block in the exhaust for some reason so get the new o2 sensor in there and see how that turns out good luck

04-10-2011, 05:01 PM

mmdambro

1st Gear

Join Date: Dec 2010

Posts: 55

any updates on this? I had this come up as well as cylinder misfires:

17536 - Fuel Trim; Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
17538 - Fuel Trim; Bank 2 (Mult): System too Lean
P1130 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16685 - Cylinder 1: Misfire Detected
P0301 - 35-00 - -
16687 - Cylinder 3: Misfire Detected
P0303 - 35-00 - -
16686 - Cylinder 2: Misfire Detected
P0302 - 35-00 - -