Hi had this fault code which is top manifold lamber sensor. The sensor is changed and ok. But code still up. Anyone help please???? Heard few people have had this problem

 

Have you reset your ecu since changing the sensor?

 

The garage it's in haven't changed sensor. But have tested it. Ecu reset but still comes on. All tests have come back saying sensor ok.... So both me and the garage lost. They have tried saying its due to remap but no chance could that cause it