OBD-II code · Powertrain (generic, extended)
P2446 Secondary Air Injection Pump Stuck Off (Bank 2)
Bank 2 secondary air pump does not deliver air when commanded. The catalyst light-off process is delayed and cold-start emissions rise.
Is it safe to drive with P2446?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump seized from condensate corrosion
- PossibleRelay failed open
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.8–3 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
- P2443Secondary Air Injection System Switching Valve Stuck Closed (Bank 2)
- P2444Secondary Air Injection System Pump Stuck Off (Bank 1)
- P2445Secondary Air Injection System Pump Stuck On (Bank 1)
- P2447Secondary Air Injection Pump Stuck On (Bank 2)
- P2448AIR System High Air Flow Bank 1
- P2449AIR System High Air Flow Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.