DTC P2127-00: App Sensor No. 2 Circuit Low Input: Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2127:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
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 2BB is less than 0.1 V, the PCM determines that the APP sensor No. 2 circuit has a malfunction.
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| Fail-safe |
- 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 any of the following APP sensor No. 2 circuits.
- PCM connector or terminals malfunction
- Short circuit in APP sensor No. 2 signal circuit and ground circuit
- Open circuit in any of the following APP sensor No. 2 circuits.
- APP sensor No. 2 malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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