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DTC U0434: Invalid Data Received From Active Roll Control Module

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2006 Mercury Mountaineer, 2006 Mercury Monterey, 2006 Mercury Montego, 2006 Mercury Mariner, and 2006 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
U0434 - INVALID DATA RECEIVED FROM ACTIVE ROLL CONTROL MODULE

Description:  Data is transferred within the normal inter-module message, but contains known invalid data. The receiving module logs a DTC related to the invalid data concern.
Possible Causes: 
  • Radio frequency interference/electromagnetic interference (RFI/EMI)
  • Corrosion or incorrect harness connections
Diagnostic Aids:  Carry out the diagnostics for the associated network module.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the appropriate VEHICLE DYNAMIC SYSTEMS article .