DTC P0103 [L3]: Notes
DTC P0103 (L3) DETECTION CONDITION & POSSIBLE CAUSES
| 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 1 AK is above 4.9 V
for 5s
, 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.
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| POSSIBLE CAUSE |
- MAF/IAR sensor connector or terminal malfunction
- Short to power supply in wiring harness between MAF/IAT sensor terminal C and PCM terminal 1 AK
- PCM connector or terminal malfunction
- Open circuit in wiring harness between MAF/IAT sensor terminal B and PCM terminal 1P
- MAF sensor malfunction
- PCM malfunction
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