Getting a re-occuring cel and fault code...

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Oct 26, 2006 | 03:57 PM

WaggsA6

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Getting a re-occuring cel and fault code...

16515/P0131/000305 - Oxygen (Lambda) Sensor B1 S1: Signal too Low
Possible Causes:
Wiring to Oxygen Sensor Bank 1 Sensor 1 faulty
Oxygen Sensor Bank 1 Sensor 1 faulty
Possible Solutions:
Check Wiring to Oxygen Sensor Bank 1 Sensor 1
Check Oxygen Sensor Bank 1 Sensor 1
Perform Aging Check

Does this probably mean I'll need to replace an oxygen sensor?
Which oxygen sensor is it if so?

Thanks,

Oct 26, 2006 | 04:09 PM

RichPugh

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Bank one, sensor one = right (passenger) side, before catalyst

Oct 26, 2006 | 04:14 PM

WaggsA6

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ok, thanks

Oct 26, 2006 | 04:18 PM

RichPugh

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welcome

Oct 26, 2006 | 08:16 PM

baskinblack4.2L

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it is the top most o2 sensor you can see it with the hood popped. I replaced both of mine

There cheep and worth replacing both. As the sensor 1 plays a role in the fuel mixture and can effect performance and gas mileage.

The dealer might be expensive. I got mine from Vast performance they were quite a bit less