DTC P2518-00: Refrigerant Pressure Sensor No. 2 Circuit High 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 P2518:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Refrigerant pressure sensor No. 2 circuit high input |
| Detection condition |
- The PCM monitors input voltage from the refrigerant pressure sensor No. 2. If the input voltage at the PCM terminal 1AU is above 4.8 V for 5 s, the PCM determines that the refrigerant pressure sensor No. 2 circuit has a malfunction.
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| Fail-safe |
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| Possible cause |
- Refrigerant pressure sensor No. 2 connector or terminals malfunction
- PCM connector or terminals malfunction
- Refrigerant pressure sensor No. 2 malfunction
- Short to power supply in refrigerant pressure sensor No. 2 signal circuit
- Open circuit in any of the following refrigerant pressure sensor No. 2 circuits.
- Signal circuit
- Ground circuit
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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