Secondary Air Injection Pump Stuck Off Bank 1
The P2445 code indicates that the engine control module (ECM) has detected the secondary air injection (SAI) pump is not operating when commanded on Bank 1. The SAI system pumps fresh air into the exhaust to reduce emissions during cold starts. A stuck-off pump prevents proper air injection, leading to increased emissions and potential check engine light illumination.
01. Most Common Causes
- Faulty secondary air injection pump relay or fuse
- Defective secondary air injection pump motor
- Wiring or connector issues in the SAI pump circuit
- Failed ECM or control module
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Failed emissions test
- Rough idle or hesitation during cold start
- Possible reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for related codes like P0410 or P2431.
Step 2: Inspect the SAI pump fuse and relay; test for power and ground at the pump connector with the engine cold.
Step 3: If power is present, test the pump motor by applying direct battery voltage; replace if it doesn't run.
Step 4: Check wiring and connectors for corrosion, damage, or loose connections; repair as needed.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, but the vehicle may fail an emissions test and the check engine light will stay on. It's best to repair it soon to avoid potential catalytic converter damage.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts like a relay or fuse, but a pump replacement can cost $200-$500 including labor.