P2432
Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance
The signal of the SAI air flow or pressure sensor is implausible during operation. The reading does not change as expected when the air pump is commanded.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Clogged SAI passagesCommon
- SAI sensor driftPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Sai Pressure Sensor
- Secondary Air Pump
P2432 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.