carlosfandango
New member
- Location
- London
Yesterday I noticed that when driving in a 20mph zone the car was really jerky so I tried in 3rd gear and 4th, but both were not running smoothly.
Car accelerates and seems to drive ok at higher revs/speeds.
Upon getting home I checked the FourStroke app and I have the error code "P0420 Catalyst System Efficiency Below Threshold".
Is it worth taking to a garage or are there some things to eliminate before I run to that expense?
Any advice greatly appreciated!
Cheers
Car accelerates and seems to drive ok at higher revs/speeds.
Upon getting home I checked the FourStroke app and I have the error code "P0420 Catalyst System Efficiency Below Threshold".
Is it worth taking to a garage or are there some things to eliminate before I run to that expense?
Any advice greatly appreciated!
Cheers