Dtc P0103 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
(See AFTER REPAIR PROCEDURE
• Are any DTC present?
DTC P0103
DETECTION
CONDITION
POSSIBLE CAUSE
Downloaded from
[LF].)

DTC P0103 [LF]

MAF sensor circuit high input
• 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).
• The MIL illuminates if the PCM detects the above malfunction condition
during 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.
• 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 MAF/IAT sensor ground circuit
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No Troubleshooting completed.
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B3E010201084W07