Engine light on

[Starkey]

My engine light is on 2 days after changing from a twin 3inch cat back to a stock cat back?
Car is also due for a service, does the engine ligh come on at service time or will it be because of the exhaust change?

Any help would be great.

Ps I did search but its seems most went the other way.

 

[HOONER]

It would be your exhaust. When its a service it should come up with a service reminder before you start you car

Sent from my XT925 using Tapatalk

 

[Starkey]

so is it just the computer learning different parameters? and if i reset will be all good? or should I take it in to Holden

 

[`Aleks]

If you changed your cats, its picking up more flow through the cats. The mechanic can remove the code if he has a scanner but it will come back again, if you ever tune your car they can remove that code so it never pops up again

 

[Starkey]

It only had an Xforce cat back and I changed it back to stock, no cat change or manifolds.

 

[benjo]

Could be your O2 sensors where they plug into your exhaust after the cats, could be knackered or maybe loose... worth a look I guess