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Discussion Starter · #1 ·
Advice needed please.

Took the Corsa to the vauxhall dealer and diagnosed a faulty 02 sensor and quoted £153 all-in to replace.

I'm sure I can get the part and sort this myself but what is exactly being referred to here? Is it the mass air flow meter on the air intake, the lamda sensor on the exhaust or something else?

Can anyone help please?
Thanks.
 

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its the probe that fits into the exhaust system before the CAT, normally has 4 wires on it if its the heated type. Easy job unless the 02 sensor is siezed in its thread but quite unlucky for that to happen.

Air mass meters can also cause an 02 sensor to show as a fault code due to the sensor showing a lean mixture outside its working parameter. It needs to be tested really.
 
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