P2447AIR System Pump Stuck Off (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2447 indicates that the bank 2 secondary air pump does not deliver air when commanded. No manufacturer publicly documents this code; Toyota and Lexus, whose V6 and V8 trucks feed both banks from one pump through two valves, log a dead pump as P2445. On designs with a separate pump per bank, the cause usually lies with the second pump: a blown fuse, a failed relay, a corroded plug or a motor seized after water got in. CARB requires detection of a system that delivers too little or no air before cold-start emissions climb past the limit. Driving is unaffected; what suffers is the readiness status and the emissions after a cold start. P2446 is the stuck-on code for the same bank.
- What you may notice
- Check engine lamp after a cold start
- Readiness for secondary air not set
- Likely causes
- LikelyBank 2 pump seized after water ingress
- PossibleBlown fuse or failed relay of the bank 2 pump
- PossibleCorroded pump connector or open ground
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.