engine system service = ecm 4801.

[ROZER]

I have a s60 t5 just had a rica stage 2 removed by Hamish and a autotech map put on the car drives very nice with the autotech pulls very good and nice when driving slow .i hatted the throttle mapping with rica but i never got this code with the rica map .i am using a 3 inch ferrita dp .the code is pointing to a bad cat or injector or o2 sensor ,am thinking the autotech map dose not like my ferrita dp and i might need to install a 02 spacer.has anyone had to do this after a autotech remap any ideas would be good.

[graemewelch]

i got a lambda fault when had mine mapped but to be fair the lambda wiring was goosed. more bhp did it make

[ROZER]

i got a lambda fault when had mine mapped but to be fair the lambda wiring was goosed. more bhp did it make

did you have this fault code with the rica you had before ,also was it the second o2 after the cat .

[silverhorse]

where did you get that code from?

[ROZER]

where did you get that code from?

bsr ppc reader .

[silverhorse]

bsr ppc reader .

Ah. I was looking at my VIDA and trying to find the code and couldn't. You need to get it read by VIDA to get a proper code. at the moment you have 3 possible expensive options. You need to find which one is knackered before spending.

[ROZER]

Ah. I was looking at my VIDA and trying to find the code and couldn't. You need to get it read by VIDA to get a proper code. at the moment you have 3 possible expensive options. You need to find which one is knackered before spending.

why vida is not going to point me right at the fault is it .

[silverhorse]

why vida is not going to point me right at the fault is it .

It will

[ROZER]

the vida code is p0420 which is ecm 4801 twc efficiency, bank 1. so how is vida going to tell me the exact part that needs changing ??

[silverhorse]

the vida code is p0420 which is ecm 4801 twc efficiency, bank 1. so how is vida going to tell me the exact part that needs changing ??

Yep, you are right. Just found the code. I think you must have a different engine to me and the code is slightly different.




This might help with where to start looking and what might be wrong.
Hopefully not too much of an expensive fix.

[andyb1375]

Ah. I was looking at my VIDA and trying to find the code and couldn't. You need to get it read by VIDA to get a proper code. at the moment you have 3 possible expensive options. You need to find which one is knackered before spending.

Sorry to point this out, but i feel when giving advice it should be correct! VIDA is a VERY good system, however it is no better than some of the other code readers when reading generic codes and it WONT always tell you where the fault lies.This is for the technician to diagnose. It will however point you in the right direction. I totally agree with the comment 'You need to find which one is knackered before spending'.
For information. I have VIDA, and Autel in our Volvo garage

[ROZER]

I think the first thing would be to check for a leak from exhaust then intake but am inclined to think its the cat am never that lucky . cheers for the help guys .

[ROZER]

well I had the car on the ramps no exhaust leak or intake leak but I did find I have one of those japan manifolds which am happy about .also had dp off and checked wastegate for cracks but its fine like new .I am going to check the compression then fuel pressure if all is ok it leaves a bad cat .

[graemewelch]

what makes you think its a bad cat and not a faulty lambda

[ROZER]

what makes you think its a bad cat and not a faulty lambda

yes it could be the lambda ,but the ferrita dp was second hand when I got it so am thinking it could be on its way out that's all . which lambda do I change front or after cat .