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klaidelę 0401 mano A6 2.5 tdi '96 103 kW parodė, kuri neišsitrynė. Ir jos nemačius, toks jausmas, kad startuojant gerokai dūmo (ne juodo) paleidžia už savęs.
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Common Problems That Trigger the P0401 Code

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