DTC P2127 00: App Sensor No. 2 Circuit Low Input: Notes
DTC P2127 00 DETECTION CONDITIONS AND POSSIBLE CAUSES (SKYACTIV-G 2.0, SKYACTIV-G 2.5)
| DTC P2127:00 |
APP sensor No. 2 circuit low input |
| DETECTION CONDITION |
- The PCM monitors the input voltage from APP sensor No. 2. if the input voltage at the PCM terminal 2AS is less than 0.1 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.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
- Regulates the upper limit of the APP sensor output.
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| POSSIBLE CAUSE |
- APP sensor connector or terminals malfunction
- Short to ground in wiring harness between the following terminals:
- APP sensor terminal F-PCM terminal 2AW
- APP sensor terminal E-- PCM terminal 2AS
- 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 F-PCM terminal 2AW
- APP sensor terminal E-PCM terminal 2AS
- APP sensor No. 2 malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
RELATED PIDS
| Item (definition) |
Unit/Condition |
Definition |
Condition/Specification (Reference) |
| APP1 |
% |
Accelerator pedal opening angle (absolute value) input from APP sensor No. 1 |
- Accelerator pedal released: Approx. 15%
- Accelerator pedal fully depressed: Approx. 82%
|
| V |
APP sensor No. 1 voltage |
- Accelerator pedal released: Approx. 0.75 V
- Accelerator pedal fully depressed: Approx. 4.1 V
|
| APP2 |
% |
Accelerator pedal opening angle (absolute value) input from APP sensor No. 2 |
- Accelerator pedal released: Approx. 7.45%
- Accelerator pedal fully depressed: Approx. 41%
|
| V |
APP sensor No. 2 voltage |
- Accelerator pedal released: Approx. 0.38 V
- Accelerator pedal fully depressed: Approx. 2.05 V
|