DTC P0103-00: MAF Sensor Circuit High Input: Notes

DTC P0103:00	MAF sensor circuit high input
DETECTION CONDITION	The PCM monitors the input voltage from the MAF sensor. If the input voltage at the PCM terminal 2BC is above 4.94 V  for 5 s  , the PCM determines that the MAF sensor circuit has a malfunction. Diagnostic support note  This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Restricts the upper limit of the engine speed. Inhibits the evaporative purge control.
POSSIBLE CAUSE	MAF sensor/IAT sensor No. 1 connector or terminals malfunction PCM connector or terminals malfunction MAF sensor malfunction Short to power supply in wiring harness between MAF sensor/IAT sensor No. 1 terminal C and PCM terminal 2BC Open circuit in wiring harness between MAF sensor/IAT sensor No. 1 terminal B and PCM terminal 2AY PCM malfunction

CAUTION:

• Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.