Air Flow Meter/Sensor: Service and Repair
Removing And Installing/Replacing Air-mass Flow Sensor (S54)
Turn off ignition.
Unlock plug (2) and detach from air-mass flow sensor (1).
Release screws (3).
Withdraw air-mass flow sensor (1) from intake pipe.
Installation Note: Check O-ring for damage, replace if necessary.
NOTE:
Interrogate fault memory of DME control unit.
Check stored fault messages.
Rectify faults.
Then clear fault memory.