DTC Descriptors
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P156A
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Air Conditioning (A/C) Pressure Too High when A/C Off
- DTC P156B
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Air Conditioning (A/C) Pressure Too Low when A/C On
- DTC P156C
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Air Conditioning (A/C) Pressure Too High After Soak Time