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Home >> Acura >> 2017 >> RDX AWD >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Electronic Power Steering (EPS) System - Diagnostics >> Advanced Diagnostics >> DTC Advanced Diagnostics: EPS related DTCs (2013-18) >> DTC 39-01: EPS Control Unit Internal Circuit (Precharge Circuit)
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DTC 39-01: EPS Control Unit Internal Circuit (Precharge Circuit)

Confirmation Procedure Basic Condition:
  • Battery voltage 10 - 16 V

With the Driving Pattern:

  • 1.

    Press the engine start/stop button to select the ON mode.

  • 2.

    Wait more than 10 seconds.

Execution Initial Diagnosis
Duration About 10 seconds
DTC Type
  • 1 drive cycle
  • EPS indicator on
Fail Safe Action
  • Does not start EPS function/assist(Re-diagnose at the next IG-ON)
Possible Cause
  • EPS control unit internal failure