The P1441 code in your 2023 Toyota Tundra indicates a malfunction in the secondary air injection (AIR) system. This emissions control system pumps fresh air into the exhaust during cold starts to reduce hydrocarbon emissions.
Understanding Secondary Air Injection
The Tundra's AIR system activates during cold starts, pumping ambient air into the exhaust manifolds. This provides oxygen for catalytic converter light-off and reduces cold-start emissions, which are the highest during engine warmup.
Common Causes of P1441
- AIR pump failure
- AIR pump relay malfunction
- Switching valve stuck or failed
- Check valve failure
- Hose leaks or disconnections
- Electrical circuit issues
Symptoms of AIR System Malfunction
- Check engine light on
- Failed emissions test
- Possible sulfur smell during warmup
- AIR pump noise abnormal
- May have no noticeable symptoms
- Extended warmup period
Tundra Emissions Compliance
The Tundra's twin-turbo V6 uses advanced emissions controls to meet strict standards. The AIR system is critical for cold-start emissions and catalyst protection.