Neilda you are spot on with your diagnosis.
Took the Mog in to have the diagnostic scan carried out.
It showed a fault code on the oxygen sensor but not the one connected to the exhaust.
It appears that when the Librands sports manifold and exhaust is fitted that one of the sensors is not used and is blanked off.
It is thought that the heavy jolt had upset it and triggered a fault to be registered.
The underside of the car had a thorough inspection with wiring and sensors checked before clearing the code.
The engine management light remained out when run this afternoon.
Thanks again lads for taking the time to read and reply to my question.
