P2445 on Subaru
Secondary Air Injection System Pump Stuck Off Bank 1
P2445 on Subaru vehicles indicates secondary air injection system pump stuck off bank 1. Au7o has documented this code across 1 Subaru model — most commonly on Forester. This generic emissions code means the secondary air injection (AIR) pump on bank 1 is not moving air when commanded to during cold-start operation. The secondary air system briefly pumps fresh air into the exhaust at startup to help burn off the rich cold-start mixture and reduce emissions, and the PCM detects no airflow or pump activity. It is primarily an emissions/inspection concern and rarely affects how the car drives, though it should be repaired to pass smog testing.
Common Causes of P2445
- •Failed or seized secondary air injection pump
- •Moisture/corrosion seizing the pump (failed check valve)
- •Faulty air pump relay or blown fuse
- •Damaged wiring or connector to the pump
- •Clogged or disconnected air hose
- •Stuck secondary air control/check valve
- •Faulty PCM driver circuit (rare)
P2445 on Subaru by Model
Subaru Forester(1 issue)
- Secondary Air Injection Pump Relay Failure — Overheat / Fire Risk (Turbo XT, Recall WTM-73 / NHTSA 16V-738)2009-2013
On turbocharged Forester XT models, the relay controlling the secondary air injection (SAI) pump can fail in the closed position, leaving the air pump running continuously. Sustained operation overheats the pump, which can melt surrounding components and create a fire risk even with the vehicle parked. Subaru recalled about 100,000 turbo vehicles (Forester XT, Impreza WRX/STI, Legacy/Outback turbo) for the defect.
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What does P2445 mean on Subaru?▼
P2445 stands for "Secondary Air Injection System Pump Stuck Off Bank 1." This generic emissions code means the secondary air injection (AIR) pump on bank 1 is not moving air when commanded to during cold-start operation. The secondary air system briefly pumps fresh air into the exhaust at startup to help burn off the rich cold-start mixture and reduce emissions, and the PCM detects no airflow or pump activity. It is primarily an emissions/inspection concern and rarely affects how the car drives, though it should be repaired to pass smog testing. On Subaru specifically, this code is documented across 1 model.
What causes P2445 on Subaru vehicles?▼
Common causes on Subaru: Failed or seized secondary air injection pump, Moisture/corrosion seizing the pump (failed check valve), Faulty air pump relay or blown fuse, Damaged wiring or connector to the pump, Clogged or disconnected air hose. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2445 on a Subaru?▼
Repair costs vary widely depending on the root cause and specific Subaru model.
Which Subaru models have P2445 documented?▼
Au7o has documented P2445 on 1 Subaru model: Forester.