What Does P2445 Mean?
The Bank 1 secondary air injection pump fails to operate when commanded by the ECM. This prevents secondary air delivery during cold start, increasing emissions and catalyst warm-up time.
Common Causes
35%
Failed secondary air injection pump motor
25%
Faulty AIR pump relay or no power to relay
20%
Open circuit or damaged wiring to AIR pump
10%
Blown fuse in AIR pump circuit
10%
Failed ECM driver circuit or control module fault
Diagnostic Steps
1
Step 1: Command AIR pump on using scan tool and listen for pump operation at engine bay
2
Step 2: Check AIR pump fuse and relay for proper operation; swap relay with known good
3
Step 3: Test for voltage at pump connector when commanded on using multimeter
4
Step 4: Check pump ground circuit for proper continuity
5
Step 5: Apply direct power to pump motor to verify pump mechanical operation
Estimated Repair Cost
$250 - $800
Parts + labor, varies by vehicle and location
The Bank 1 secondary air injection pump fails to operate when commanded by the ECM. This prevents secondary air delivery during cold start, increasing emissions and catalyst warm-up time.
The most common cause of P2445 (Secondary Air Injection System Pump Stuck Off Bank 1) is: Failed secondary air injection pump motor
Typical repair costs for P2445 range from $250 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but increased cold-start emissions may damage catalytic converter over time. Repair within a few weeks to prevent catalyst degradation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2445 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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