2021 Volkswagen Passat SE 2.0L MIL Lamp on
Got this from another shop after they installed a new OEM air pump and lines, we installed a new secondary air pressure sensor, a new check valve at head, cleaned the port through the head and confirmed air escaping through the exhaust, have been fighting ...
Summary posted 12/5/2024
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Vehicle Data2021 Volkswagen Passat SE
Trouble Codes
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Message Closed w/Summary
Vehicle Data
2021 Volkswagen Passat SE
VIN | 1VWSA7A31M |
Engine | 2.0 L / 4 cyl / GAS |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / Turbo |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Not Applicable |
Trouble Codes
P0491 | AIR System Performance |