Powertrain
generic / SAE
P2517
A/C Refrigerant Pressure Sensor B Circuit Low
A/C refrigerant pressure sensor B signal voltage reads below the lower limit. Either a short to ground in the signal wire, an open reference voltage at the sensor, or an internal short. The ECM ignores the reading and disables A/C closed-loop control until the circuit recovers.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 17
Possible causes
- Signal wire shorted to ground high
- Missing 5 V reference at the sensor medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.4–1.5 h
- Component: ac pressure sensor b
- Component: sensor wiring
- MIL / check engine light
Sources
References
sae:J2012