P0530low severityPowertrain
A/C Refrigerant Pressure Sensor Circuit
on 2016 GMC Sierra 1500 5.3L V8 · 4WD
What this code means
Malfunction in the A/C refrigerant pressure sensor circuit.
Symptoms
- Check Engine Light
- A/C not working
- A/C compressor not engaging
Common causes
- Faulty pressure sensor
- Low refrigerant level
- Wiring issue
Diagnostic steps
- Test sensor output
- Check refrigerant level
- Inspect wiring
Repair notes
Check refrigerant level first. Replace pressure sensor if faulty.
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