Hi

This car was fitted with a new engine ECU because of ingress of oil due to a faulty crank sensor pushing oil up the loom. Also, someone had in the past attempted a repair on it.

The problems with the old ECU were random missfire codes and flatline front oxygen sensor (o2) signal.

The missfire has gone and the oxygen sensor now switches. The garage has replaced the front sensor with a genuine item and the rear with an aftermarket one.

Since then we have had the faults listed below

P0403-EGR control
P0135-Oxygen sensor B1S1 heater circuit
P0141-Oxygen sensor B1S2 heater circuit
P0443-Evap system purge control valve circuit
Also Coolant temp sensor CAN signal not okay

These codes will delete and will return after a test drive.

Could this be a coding issue? The TIS2WEB worked seamlessly and no issues were noted.
Any ideas would be helpfully

Regards

Simon