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
- $20 to $400
- 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
P0419 Secondary Air Injection System Relay B Circuit Low
The P0419 code means the computer found a fault in the circuit of secondary air pump relay B, which exists on vehicles with two pumps or two relays. A relay that does not close leaves the pump dead, and one that sticks closed runs it all the time. Check the fuse, the relay and the connector before you replace the pump.