DTC P0100, DTC P0102 & DTC P0103: Notes
WARNING: This page is about a different car, the 2003 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
Code Definition
- DTC P0100: Mass Airflow Meter Circuit
- DTC P0102: Mass Airflow Meter Circuit Low Input
- DTC P0103: Mass Airflow Meter Circuit High Input
CAUTION:
If Engine Control Module (ECM) replacement is instructed in following test, always ensure ECM electrical connectors and ground circuits are okay. If either are defective, repair and repeat testing to confirm ECM malfunction.
NOTE:
If DTCs related to TPS, IAT sensor, MAF meter, ECT sensor, APP sensor & VPS are output simultaneously, the E2 sensor ground circuit at ECM 31-pin connector E7 terminal No. 11 (Black/White wire) may be open. For ECM electrical connector terminal identification, see Figure. It may be necessary to check Black/White wire between splice I13 and ECM 31-pin connector E7 terminal No. 11. Splice I13 is located behind passenger's side of instrument panel. See Figure.