P2445 Secondary air pump: stuck off (bank 1)
P2445 means: Secondary air pump: stuck off (bank 1). The secondary air system blows air into the exhaust on a cold start so the catalytic converter warms up faster. OK to drive, but have it checked soon. The repair usually costs about €80–600 in Estonia.
What it means
The secondary air system blows air into the exhaust on a cold start so the catalytic converter warms up faster. The computer found too little air or a fault in the pump or valve control. The part stays stuck in one position and doesn't follow the computer's commands.
What you may notice
- Engine light on
- Unusual pump noise on a cold start
- Usually no change in driving
What could be wrong
- 1Air pump seized by moisture or burnt out
- 2Check valve stuck
- 3Hose loose or cracked
- 4Pump relay or fuse
Repair difficulty: Moderate
What you can check yourself
On a cold start, listen for the pump droning in the engine bay for a few seconds. You can check the simple things yourself, but the repair is best done in a workshop.
How we fix it
- We check pump and valve operation with the diagnostic tool
- We check the hoses and relay
- We replace the pump or valve
Standard SAE description: Secondary Air Injection System Pump Stuck Off Bank 1