Part of the generic P3401 overview — this page covers the Ram meaning specifically.
OBD-II Diagnostic Trouble Code
P3401
Mds Solenoid 1 Circuit
P
Powertrain
engine / trans
engine / trans
3
Mfr
manufacturer code
manufacturer code
4
Auxiliary emission controls
01
Mds Solenoid 1 Circuit
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Ram
System
Powertrain
Model
RAM 1500
Years
2002-2008