2018 Infiniti QX30 BaseFACTORY OEM SERVICE PROCEDURE

Steering Control System DTCS

STEERING CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Description
B210A CONTROL UNIT POWER SUPPLY
B210B CONTROL UNIT POWER SUPPLY
B210D CONTROL UNIT POWER SUPPLY
B210E CONTROL UNIT POWER SUPPLY
C1592 EPS MOTOR
C1593 TORQUE SENSOR
P0635 CONTROL UNIT
P1644 CONTROL UNIT
U0001 CAN COMMUNICATION
U0100 ENGINE SYSTEM
U0122 ELECTRIC STABILITY PROGRAM (ESP) SYSTEM
U0155 COMBINATION METER SYSTEM
U0159 ELECTRIC PARKING BRAKE SYSTEM
U0168 ELECTRIC IGNITION LOCK SYSTEM
U0212 STEERING COLUMN CONTROL MODULE
U0401 ENGINE SYSTEM
U0416 ELECTRIC STABILITY PROGRAM (ESP) SYSTEM
U0423 COMBINATION METER SYSTEM
U0427 ELECTRIC IGNITION LOCK SYSTEM
U0429 STEERING COLUMN CONTROL MODULE
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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