AIR System Air Flow or Pressure Sensor Circuit Bank 1
A general circuit fault on the secondary air injection (AIR) system flow or pressure sensor on bank 1 - the sensor that verifies air pump flow during cold-start enrichment compensation.
Affected components
- Air system flow sensor b1
Common causes
- High likelihood: Open in sensor or wiring
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
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.