02 Sensor question

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PositronicRay

Original Poster:

27,045 posts

184 months

Wednesday 29th October 2014
quotequote all
94 MB SL320 (petrol)

Question for you sages. I ran a diagnostic check and the code or OS sensor pre cat popped up. Peer under the car wiring is damaged and the sensor is not connected, why wouldn't this bring up the engine check (emissions light)

The car has been running perfectly BTW smooth engine and no decernible difference in fuel consumption.

Just curious?

PositronicRay

Original Poster:

27,045 posts

184 months

Wednesday 29th October 2014
quotequote all
Thanks chaps.