IF YOU CONFIRM: The MIL is ON with DTC P0101 (MAF SEN/CIRCUIT-B1) and There are no drivability issues. ACTION: 1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on. 2. If this bulletin applies, reprogram the ECM. NOTE: If this bulletin does apply (the ECM needs to be reprogrammed), do NOT replace the mass air flow sensor. Please see this bulletin for further details.
