Exhaust Lamda sensors

[Geewhite32]

Me again,.
I had the fault's on my ecu cleared.
It's back on after 6 miles.
I had a new cat fitted and two new lamdas fitted.
Do they need mentioned to the ECU?
One of the fault's mention a pre cat faulty one ..but both new?
Cheers.
Graeme

 

[MRBILLYUK]

Me again,.
I had the fault's on my ecu cleared.
It's back on after 6 miles.
I had a new cat fitted and two new lamdas fitted.
Do they need mentioned to the ECU?
One of the fault's mention a pre cat faulty one ..but both new?
Cheers.
Graeme

Genuine Bosch lambda sensors or cheap ones?

 

[Geewhite32]

Genuine Bosch.. . I think about £120 for the two but would have to check

 

[Geewhite32]

£92 for the two of them.

 

[Colin-S]

If your car had a pre-cat lambda fault it would be driving horrible,

I've had a post-cat lambda sensor fault but it didn't effect how the car ran.

I wonder if you've got a hairline crack in your manifold? or you've been unlucky with crap lambda sensors?

 

[MRBILLYUK]

Genuine Bosch.. . I think about £120 for the two but would have to check

If you've used genuine Bosch lambda sensors I'd be looking at your aftermarket Cat?
When you change a lambda sensor the ecu picks this up and there's usually no need to clear the old codes.