DTC P0103: Notes
DTC P0103 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 is running. If the input voltage is more than 4.9 V
, the PCM determines that the MAF sensor circuit input voltage is high.
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
- PENDING CODE is available if the PCM detects the above malfunction condition.
- FREEZE FRAME DATA is available.
- The DTC is stored in the PCM memory.
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| 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 5N
- Open circuit in wiring harness between MAF/IAT sensor terminal B and PCM terminal 5U
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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