Error code
AUDI otomotiv code P0401
No approved translation for this record yet; showing the original text.
Meaning
Restriction in the EGR passages usually caused by carbon buildup, The EGR Valve is defective, Lack of proper vacuum or electrical signal to the EGR valve, Malfunctioning EGR Vacuum supply solenoid, Lack of proper EGR system feedback to the computer from the: Manifold Absolute Pressure Sensor (MAP), Differential EGR Pressure Feedback Sensor (DPFE), EGR Valve Position Sensor (EVP), EGR Temperature Sensor
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Address of this page: https://www.remfixit.com/tr/audi/otomotiv/p0401