Mazda 3 - Dtc P0103 [Z6]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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DTC P0103 [Z6]
B3E010200100W02
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 input the voltage at PCM terminal 2AU is more than 4.9 V, the
PCM determines that the MAF circuit has a malfunction.
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.
POSSIBLE CAUSE
• MAF malfunction
• Connector or terminal malfunction
• Short to power supply in wiring harness between MAF/IAT sensor terminal
C and PCM terminal 2AU
• Open circuit in wiring harness between MAF/IAT sensor terminal B and
PCM terminal 2BC
• PCM malfunction