DTC P0103: Notes
DTC P0103 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0103 |
MAF circuit high input |
| DETECTION CONDITION |
- The PCM monitors input voltage from the MAF sensor when the engine is running. If the input voltage is above 4.9 V
, the PCM determines that the MAF circuit has a malfunction.
Diagnostic support note
- This is a continuous monitor (CCM).
- MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
- FREEZE FRAME DATA is available.
- DTCs are stored in the PCM memory.
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| POSSIBLE CAUSE |
- MAF sensor malfunction
- Connector or terminal malfunction
- Short to power supply in the wiring harness between MAF/IAT sensor terminal C and PCM terminal 1P
- Open circuit in the wiring harness between MAF/IAT sensor terminal B and PCM terminal 11
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 Courtesy of MAZDA MOTORS CORP.
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