DTC P2126:00: Notes

DTC P2126:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P2126:00	APP sensor No. 2 circuit range/performance problem
DETECTION CONDITION	The PCM monitors the APP sensor duty signal. If the input signal (duty signal) is too high or too low than the set value, or the input signal intervals are too short or too long, the PCM determines that the APP sensor No. 2 has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The MIL 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.
POSSIBLE CAUSE	APP sensor connector or terminals malfunction Short to ground or open circuit in APP sensor No. 2 power supply circuit Short to ground in wiring harness between main relay terminal C and APP sensor terminal F ENG INJ 15 A fuse malfunction Open circuit in wiring harness between main relay terminal C and APP sensor terminal F Short to ground in wiring harness between APP sensor terminal E and PCM terminal 1AC PCM connector or terminals malfunction Short to power supply in wiring harness between APP sensor terminal E and PCM terminal 1AC 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 E-PCM terminal 1AC APP sensor terminal D-PCM terminal 1AV APP sensor No. 2 malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P2126:00

APP sensor No. 2 circuit range/performance problem

DETECTION CONDITION

The PCM monitors the APP sensor duty signal. If the input signal (duty signal) is too high or too low than the set value, or the input signal intervals are too short or too long, the PCM determines that the APP sensor No. 2 has a malfunction.

Diagnostic support note

This is a continuous monitor (CCM).
The MIL 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.

POSSIBLE CAUSE

APP sensor connector or terminals malfunction
Short to ground or open circuit in APP sensor No. 2 power supply circuit
- Short to ground in wiring harness between main relay terminal C and APP sensor terminal F
- ENG INJ 15 A fuse malfunction
- Open circuit in wiring harness between main relay terminal C and APP sensor terminal F
Short to ground in wiring harness between APP sensor terminal E and PCM terminal 1AC
PCM connector or terminals malfunction
Short to power supply in wiring harness between APP sensor terminal E and PCM terminal 1AC
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 E-PCM terminal 1AC
- APP sensor terminal D-PCM terminal 1AV
APP sensor No. 2 malfunction
PCM malfunction

Courtesy of MAZDA MOTORS CORP.