Secondary Air Injection Pump Stuck Off Bank 2
The P2447 code indicates that the Engine Control Module (ECM) has detected the secondary air injection pump is stuck in the off position for Bank 2. This system injects fresh air into the exhaust to reduce emissions during cold starts. A stuck pump prevents proper air injection, leading to increased emissions and potential catalyst damage.
01. Most Common Causes
- Faulty secondary air injection pump relay
- Blown fuse for the secondary air injection system
- Wiring or connector issues in the pump circuit
- Failed secondary air injection pump motor
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 P2447 and check for related codes.
Step 2: Inspect the secondary air injection pump fuse and relay; replace if faulty.
Step 3: Test the pump circuit for voltage and ground at the pump connector.
Step 4: If power and ground are present, replace the secondary air injection pump.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, but it may cause increased emissions and potential catalyst damage over time. It's best to repair promptly.
How much does it cost to fix?▼
Typically $50-$150 for a relay or fuse, or $200-$500 for pump replacement including labor.