AIR System Pump Supply Voltage Circuit Bank 1
The AIR pump supply voltage circuit on bank 1 reports a fault. Pump may not start when commanded.
Affected components
- Secondary air injection pump b1
- Wiring harness
- Ecm
Common causes
- High likelihood: Supply fuse blown
- Medium likelihood: Wiring or connector fault
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.