P2472Audi TtYears: 1996 - 2026
Secondary Air Injection / Exhaust System (P2472)
Reviewed by ASE Certified Technician
What does this mean?
Code P2472 relates to the secondary air injection or exhaust gas treatment system.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Audi Tt models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty secondary air injection pump
Stuck secondary air injection check valve
Failing or clogged catalytic converter
Damaged, chafed, or broken wiring harness
Symptoms to Watch For
- Check Engine Light is illuminated
- Failed emissions test
- Rough or unstable idle
- Rotten egg smell (sulfur) from exhaust