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02 sensor problem


karllap
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The engine management light was on my Golf V5 2002, the readout said

Code 16516 / 02 sensor circuit B1 S1 P0134 No activity Detected

The garage diagnosed from this that precat Lambda was shafted and changed it, reset the codes and everything was fine for 3 days but then it came back on with the same fault.

When they reset the codes the management light went of, stayed of for a few days again then caim back with the same fault.

Has anybody any idea what this could be.

Also, I don't know if its relevant or not but the low screen water light is on, I've shorted the switch out and it stays on.

HELP!

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In fairness trhe computer says that the lambda was faulty so thats why they changed it, when I take it back all they can really do is look at the diag read out which will say its the Lambda again .

I've noticed that if I disconnect the battery it resets again, and again the light will stay off for a day or 2 then come back on.

Has any body any idea at all what could be causing it?

Thanks

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