VOLKSWAGEN
Reported code forms P0401
MIL ON, DTC P0401 Exhaust Gas Recirculation Flow Insufficient Stored in ECM Fault Memory, Could be Accompanied with Fault P2463 DPF Soot Accumulation
HomeP0401 · Manufacturer communications
P0401 · Manufacturer communications
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
VOLKSWAGEN
Reported code forms P0401
MIL ON - DTC's P047F, P0477, P048A, P048B, P048C or P0401 Stored in ECM Fault Memory