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CEL is on today. Code:P0153 Oxygen Sensor Bank2 Sensor1 slow response

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Old 06-06-2008, 03:07 PM   #1
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Default CEL is on today. Code:P0153 Oxygen Sensor Bank2 Sensor1 slow response

Just did timing belt job. The car is running fine. After 50 miles of driving, the cel is on with P0153. It is the front driver side O2 sensor. Before I purchased this car, two O2 sensors were replaced at 120K. Those two sensors(I remembered) are located on the driver side as well. Now the car has 137K. So what kind of problem do I have here? Is it related to timing belt replacement? Also, I added some engine oil after timing belt job. It is over the MAX mark now. Will that cause the O2 to fail? Thanks!
99.5 A4 2.8L AHA Manual Quattro
>H&R and Bilstein Suspension Combo @135K
>Control Arms and CV shafts rebuilt @135K
>Timing Belt Kits and VC Gasket Kits @137K
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Old 06-06-2008, 03:21 PM   #2
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Default What kind of sensors were used? OEM or "universal".

If OEM, reset the light and see if it comes back, if "universal", replace with OEM.

Not related to t-belt service.

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Old 06-06-2008, 06:09 PM   #3
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Default ummm how much overfil on the oil? Why did you even drive the car if it was way over?

That blow by can hurt the cats as far as I think I know so I bet it ain't great for anything else along the line? Anyone?
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Old 06-07-2008, 10:33 PM   #4
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Default I would attribute your oxygen sensor failure to both

and overfill
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Old 06-07-2008, 10:33 PM
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2002, audi, cel, chevy, circuit, code, oxygen, p0153, pickup, po153, replacement, response, sensor, slow, suburban

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