Engine light

[Stevie w]

Hi all 

I've bought a 51 plate puma

ive been informed that the engine light is on because it's running LEAN 

any ideas what the problem is ?

[dsayer]

Hi does this car have a secondary air pump if so that could be your problem 

[Stevie w]

Where will that be situated?

the car drives really well just the light is on I've taken it off but after 5 days off it came back on

[dsayer]

I'm not sure on a puma if it has one what is the code you are getting I have a galaxy and when I plugged it in I could see it was always running in open loop lean which was down to the pump not running its there to heat the cat up quicker and because it was not seen to be running left the car in open loop all the time and putting the engine light on 

[Stevie w]

I have been informed it's the Lambda sensor 

but then I've also been told about someone who changed that and still the light stayed on 

[dsayer]

Well you have 2 choices replace the sensor of buy a scanner to get the code very cheap on ebay