Engine management light on, O2 sensor

Engine management light on, O2 sensor

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Yazza54

Original Poster:

18,559 posts

182 months

Saturday 21st February 2015
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Hi guys

Need some help, my GFs 1.4 mini one (2007) has recently put the engine management light on, every now and then it will hesitate under acceleration and/or judder

I took it to a friend just to get the code read and he said the O2 readings are all over the show, should be about 1v and this is around 3.5v+

I was thinking it was just a case of replacing the sensor but he said last time they had this problem they replaced the sensor and it still had the problem... Apparently it needed a software update due to a crash or something which sounds worrying.

Obviously don't want to spent 160 quid on a new sensor to achieve nothing, has anyone come across this before??