Engine Management Light

[MikeReay89]

Engine management light has come on. Does it need ECU remap?

[stendog]

1. do a search mate covered alot
2. the search will show threads saying go to garage and get diagnostics run on it to show the fault code

[Yates]

have you messed bout exhaust or manifold recently? 9/10 its the lambda sensor

[MikeReay89]

Cheers. Yes I have 4-1 but it came on before was fitted?

[Yates]

try disconnecting lambdas for a bit and then leaving battery off for a bit, see what it does, if it comes back on take it somewhere to get diagnostics, wouldnt go straight to citroen tho they cost a bomb some places

[MikeReay89]

Ok cheers mate will try when car is nice and cold

[fastroadkid69]

there was a bloke on ebay selling a guide how to get this fixed the other day dont no if still on there though:y:

[potatopete]

Doesn't need a remap, but you will need to have your car connected to diagnostics computer to find out why its on, and then get the problem sorted.

[Liam_]

Try disconnecting the battery for about 10 minutes. Sometimes the light will turn itself off after a few drives. :)

[CJ_Saxo]

When i put my 4-2-1 in, i broke the "green" lambda sensor, and my light came on, replaced it and it went off after a few hours.

JUst came back on though, bloody annoying how its got to be something else.

[MikeReay89]

Ok cheers for the comments.

[Liam_]

When i put my 4-2-1 in, i broke the "green" lambda sensor, and my light came on, replaced it and it went off after a few hours.

JUst came back on though, bloody annoying how its got to be something else.

Was the same with mine mate... disconnect your battery for 5 or 10 mins and it should go out after a few drives. I take it you've sleeved the blue (second) lambda?

[ts1]

take the battery off for about a half a hour and then reconnect. mine used to come on after getting decated.

[MikeReay89]

ok thanks for help guys

[Mr_suv]

have you messed bout exhaust or manifold recently? 9/10 its the lambda sensor

was going to say the exact same thing