Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

P151C

A/C Low Side Pressure Sensor & A/C High Side Pressure Sensor = Not within 200 kPa (29 PSI) of each other. - For greater than 1 h

P2516

A/C Low Side Pressure Sensor & A/C High Side Pressure Sensor = Within 50 kPa (7 PSI) of each other - For greater than 15 s

P2517

A/C Low Side Pressure Sensor = Open/Short to Ground

P2518

A/C Low Side Pressure Sensor = Short to Voltage