NTB21-049

MIL ON WITH DTC P0101 AND/OR P0507 STORED IN THE ECM IF YOU CONFIRM The MIL is ON and DTC P0101 (MAF SENSOR) and/or P0507 (ISC SYSTEM) is stored in the ECM. ACTION 1. Test the vehicle's 12 volt battery using the Midtronics DSS-5000. Recharge or replace the battery if necessary. 2. Erase all DTCs. 3. Perform Idle Air Volume Learning (IAVL).