OBD-II code · Powertrain (generic, extended)
P2447 Secondary Air Injection Pump Stuck On (Bank 2)
Bank 2 secondary air pump runs continuously. Either a stuck-on relay or a shorted control output keeps the pump powered when it should be off.
Is it safe to drive with P2447?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRelay stuck closed
- PossibleDriver stage shorted on
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Secondary Air Pump B2, Secondary Air Relay
Related codes
- P2446Secondary Air Injection Pump Stuck Off (Bank 2)
- P2444Secondary Air Injection System Pump Stuck Off (Bank 1)
- P2445Secondary Air Injection System Pump Stuck On (Bank 1)
- P2448AIR System High Air Flow Bank 1
- P2449AIR System High Air Flow Bank 2
- P244ADiesel Particulate Filter Differential Pressure Too Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.