Hi. Ran a test on Torque App and this popped up. Just wondered if anyone knows what it is ?
Reason for the test was I've had a few issues with Emission's. About 2 years ago the EML came on. It was either the 4030 or 4020 code so I had it looked at and decided to change an 02. This seemed ok but then the EML came back on with the same code. So I bought an OBD reader & cleared the code myself. It hasn't returned. However... the car has since had trouble going through its MOT on emissions.
Car drives without fault but its kinda bugging me. My thinking is if there's an issue then surely the EML would come on ? I know it could just be the Cats or an O2 sensor & I've used Cataclean before each test.
Thanks