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P0491 Fixes for Secondary AIR Injection VW Jetta Part #2 Easy Free Inexpensive VW Jetta
Audi Fault Codes P0491 & P0492
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How to fix VW code P0491 Secondary Air Injection Low Flow
What is P0491 Engine Code [Quick Guide]
P0491 | P0491 Secondary Air Injection System Insufficient Flow Bank | code p0491
P0491 Explained — Secondary Air Injection System Malfunction (Bank 1) — emission control v | Trouble
VW Tiguan 2.0T P0491 Here’s the problem.
Ford Focus P0491 Trouble Code Repair
Audi S4 B6 B7 p0491 p0492
P0491 Pass Emission. Check engine light on, secondary air injection
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Last Updated: August 23, 2026
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