Engine Error
P0414
Secondary Air Injection System Switching Valve A Circuit Shorted
Severity
Low
Symptoms
Check engine light, blown fuses leading to other minor electrical issues
Common Causes
- Internal short in the AIR switching valve
- Wiring harness shorted to ground
- Water intrusion in the connector
- Failed PCM
How to Fix
- 1 Replace the shorted switching valve
- 2 Trace and repair shorted wires
- 3 Dry connector and use dielectric grease
- 4 Test PCM output
Estimated Repair Cost
USD
$80
–
$250
Switching valve replacement: $100 - $250