What Does P2444 Mean?
The Bank 1 secondary air injection pump remains energized continuously when it should be off. This can cause air pump overheating, excessive noise, and poor fuel economy.
Common Causes
40%
Shorted or stuck AIR pump relay in closed position
25%
Short to power in AIR pump control circuit wiring
20%
Failed ECM output driver stuck on
10%
Defective AIR pump with internal short causing continuous operation
5%
Faulty AIR pump control module or driver
Diagnostic Steps
1
Step 1: Verify Bank 1 AIR pump is running continuously when engine is running and cold
2
Step 2: Locate and test AIR pump relay; swap with known good relay to test
3
Step 3: Check for voltage at pump when ECM commands it off using multimeter
4
Step 4: Inspect wiring harness for chafing, damage, or shorts to power
5
Step 5: Test ECM control circuit by disconnecting pump and monitoring command signal
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The Bank 1 secondary air injection pump remains energized continuously when it should be off. This can cause air pump overheating, excessive noise, and poor fuel economy.
The most common cause of P2444 (Secondary Air Injection System Pump Stuck On Bank 1) is: Shorted or stuck AIR pump relay in closed position
Typical repair costs for P2444 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive short distances but pump may overheat and fail. Reduced fuel economy and potential pump motor damage if driven extensively.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2444 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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