Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- Low
- Can I keep driving?
- Yes, no immediate risk
- Estimated cost
- $30 to $300
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance Low
The P0531 code means the A/C refrigerant pressure sensor gives a reading that is electrically valid but does not match what the computer expects. The main effect is a disabled air conditioner. Compare the scan tool reading against real gauge pressure before you replace the sensor.