Engine Error
P0419
Secondary Air Injection System Control B Circuit
Severity
Low
Symptoms
Check engine light on, failed smog inspection
Common Causes
- Failed secondary air injection pump relay B
- Faulty secondary air pump B (if equipped)
- Damaged wiring to pump B
- Corroded relay socket
How to Fix
- 1 Replace relay B
- 2 Replace secondary air pump B
- 3 Fix damaged wiring
- 4 Clean relay socket and terminals
Estimated Repair Cost
USD
$20
–
$400
Relay: $20; Air pump: $150 - $400