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P0139 fault code

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Old Sep 29, 2021 | 03:22 PM
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Taff107
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From: Hants
Default P0139 fault code

Chaps, I'm getting the above fault code on my '02 Bugeye which comes back as O2 Sensor Circuit Slow Response (Bank 1, Sensor 2). ICP say this is the one I need ..

https://www.importcarparts.co.uk/par...chPart=ICP5053

so before I go ahead and purchase, can someone confirm Bank one, sensor 2 is located front right in the wheel well behind the flap as per here?

Many tx

Just noticed that link is for sensor 1 so I should be looking for another fitted further back in the exhaust ?

Last edited by Taff107; Sep 29, 2021 at 03:39 PM.
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Old Sep 29, 2021 | 04:46 PM
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From: Harpenden
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Assuming a UK car
Bank 1 sensor 1 would be the one in the manifold (RH front wheel well) and is the front O2 (A/F) sensor (item 1 below)



Bank 1 sensor 2 is the rear O2 sensor after the cat in the down pipe. (item9 below)

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Old Sep 29, 2021 | 04:49 PM
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From: Tetbury
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The front sensor is air-fuel, the rear sensor is oxygen.

The IPC sensor linked is the O2 for the rear. The sensor by the front wheel is the Lambda/AFR sensor.
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Old Sep 29, 2021 | 05:21 PM
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From: Hants
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Superb - many tx guys
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