DTC P0108:00: Notes

DTC P0108:00	MAP sensor circuit high input
DETECTION CONDITION	The PCM monitors the input voltage from the MAP sensor. If the input voltage is above 4.9 V for 5 s , the PCM determines that the MAP sensor circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	-
POSSIBLE CAUSE	MAP sensor connector or terminals malfunction PCM connector or terminals malfunction Short to power supply in wiring harness between MAP sensor terminal D and PCM terminal 2AG MAP sensor power supply circuit and signal circuit are shorted to each other Open circuit in wiring harness between the following terminals: MAP sensor terminal D-PCM terminal 2AG MAP sensor terminal A-PCM terminal 2AV MAP sensor malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.