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
- $40 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
P0427 Catalyst Temperature Sensor Low (Bank 1) Low
The P0427 code means the signal from the bank 1 catalyst temperature sensor has dropped below its minimum value. The main effect is reduced protection for the catalytic converter. A signal wire shorted to ground or a missing 5 volt reference is the usual cause.