quaffle
Member
Hello all,
So a little while back my engine management light appeared on the dash.
Plugging a code reader/diagnostic gave the the following error message:
P0420 Catalyst System Efficiency Below Threshold Bank 1
In the past, I had to change the catalytic converter to a new one as the old one developed a crack. I'm using the new cat now.
I'm pretty sure the catalytic converter is working fine as it's passing it's MOT getting normal results in emissions.
I had to cut the top (pre-cat) lambda out as it was rusted in when changing catalytic converter and I thought I might have damaged it during the process.
I bought a new 3rd party lambda sensor. This one exactly.
It went in OK but now I'm getting these engine management codes.
Please click for Imgur album
The original error code has gone (yay?) but now I'm getting these.
Any ideas guys? I'm lost on this one.
Fiat Punto 1.2L 16v Active Sport 2003
Cheers.
So a little while back my engine management light appeared on the dash.
Plugging a code reader/diagnostic gave the the following error message:
P0420 Catalyst System Efficiency Below Threshold Bank 1
In the past, I had to change the catalytic converter to a new one as the old one developed a crack. I'm using the new cat now.
I'm pretty sure the catalytic converter is working fine as it's passing it's MOT getting normal results in emissions.
I had to cut the top (pre-cat) lambda out as it was rusted in when changing catalytic converter and I thought I might have damaged it during the process.
I bought a new 3rd party lambda sensor. This one exactly.
It went in OK but now I'm getting these engine management codes.
Please click for Imgur album
The original error code has gone (yay?) but now I'm getting these.
Any ideas guys? I'm lost on this one.
Fiat Punto 1.2L 16v Active Sport 2003
Cheers.
Last edited: