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
- Medium
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $80 to $1,500
- 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
P0430 Catalyst System Efficiency Below Threshold (Bank 2) Medium
The P0430 code is the same diagnosis as P0420 but for bank 2, the side of the engine that does not hold cylinder number one. It only appears on V-type or boxer engines. Before you replace the converter, rule out exhaust leaks and aging O2 sensors, which set this code on a healthy converter.