Secondary Air Injection System Control B Circuit
A general electrical fault on AIR system control circuit B (typically the AIR pump driver line on the second pump or relay).
Affected components
- Secondary air injection pump
Common causes
- High likelihood: Pump driver or relay fault
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.