DTC P2127-00: App Sensor No. 2 Circuit Low Input: Notes

DTC P2127:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2127:00	APP sensor No. 2 circuit low input
DETECTION CONDITION	The PCM monitors the input voltage from APP sensor No. 2 when the engine is running. If the input voltage is less than 0.2 V, the PCM determines that the APP sensor No. 2 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	Regulates the upper limit of the APP sensor output.
POSSIBLE CAUSE	APP sensor connector or terminals malfunction Short to ground in wiring harness between the following terminals: APP sensor terminal A-PCM terminal 1W APP sensor terminal B-PCM terminal 1AO PCM connector or terminals malfunction APP sensor No. 2 signal circuit and ground circuit are shorted to each other Open circuit in wiring harness between the following terminals: APP sensor terminal A-PCM terminal 1W APP sensor terminal B-PCM terminal 1AO APP sensor No. 2 malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.