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
- $60 to $350
- 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
P2431 Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance (Bank 1) Low
The P2431 code means the secondary air flow or pressure sensor gives a reading that is electrically valid but does not match what the computer expects. The result is that the computer cannot verify the secondary air system. The car drives normally.