DTC P0103: Notes

DTC P0103 [L3] CHART

DTC P0103	MAF sensor circuit high input
DETECTION CONDITION	The PCM monitors the input voltage from the MAF sensor when the engine running. If the input voltage at PCM terminal 1AC is above 4.9 V , the PCM determines that the MAF circuit has malfunction. Diagnostic support note This is a continuous monitor (CCM). MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	MAF sensor malfunction Connector or terminal malfunction Short to power supply in wiring harness between MAF/IAT sensor terminal C and PCM terminal 1AC Open circuit in wiring harness between MAF/IAT sensor terminal B and PCM terminal 1BD PCM malfunction