AIR System Pump Stuck On Bank 2

Where it lives

For P2446, start at the pump the description names. The description of P2446 puts it on bank 2.

Check these first

• A bank 2 AIR pump relay stuck closed
• A short to ground keeping the bank 2 AIR pump energized
• A failed bank 2 AIR pump control module
• A bank 2 AIR pump that runs whenever the key is on

What to do next

1. Command the bank 2 AIR pump off and check whether it stops
2. Test the bank 2 pump relay and feed circuit
3. Check the bank 2 pump control wire for a short to ground
4. Measure voltage at the pump with the key on
5. Replace the bank 2 AIR pump relay or control module as found
6. Clear the code and retest

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