LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2021 >> Q60 Pure, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (DTCS) (1 Of 3) >> EPS/DAST 3 (Power Steering Control Module) >> DTC C1604: Torque Sensor >> DTC Diagnosis Procedure >> Electric Power Steering System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Electric Power Steering System

  1. PERFORM SELF-DIAGNOSIS 

    SYMBOL With CONSULT

    1. Turn the ignition switch OFF to ON.
    2. Erase self-diagnostic results for "EPS/DAST 3".
    3. Turn the ignition switch OFF and wait for at least 10 seconds.
    4. Start the engine.
      CAUTION: Never drive the vehicle.
    5. Perform self-diagnosis for "EPS/DAST 3".

    Is DTC "C1604" detected?

    YES

    Power steering torque sensor is malfunctioning. Replace steering gear assembly. Refer to STEERING GEAR AND LINKAGE : Removal & Installation .

    NO

    Check pin terminal and connection of each harness connector for malfunctioning conditions.