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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Electronic A/T Shift Lever System - Diagnostic Codes & Circuit Tests) >> Electronic Shift Lever System >> DTC P18B5-62: Gear Shift Actuator "A" Phase U-V-W Current Sensor Signal Compare Failure; DTC P18B9-62: Gear Shift Actuator "B" Phase U-V-W Current Sensor Signal Compare Failure [11/2021 - ] >> Description

DTC P18B5-62: Gear Shift Actuator "A" Phase U-V-W Current Sensor Signal Compare Failure; DTC P18B9-62: Gear Shift Actuator "B" Phase U-V-W Current Sensor Signal Compare Failure [11/2021 - ]: Description

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The shift actuator ECU monitors the ECU internal operation, and if a malfunction is detected, the ECM stores a DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
P18B5-62 Gear Shift Actuator "A" Phase U-V-W Current Sensor Signal Compare Failure When the BAT1 terminal voltage is a certain value or more, the total value of the actuator motor current sensor for phase U, V and W exceeds a certain value continuously
(1 trip detection logic)
Shift control actuator assembly (shift actuator ECU) Does not come on Multi-information Display Error Message 
  • Displayed
Transmission A SAE: P18B5
P18B9-62 Gear Shift Actuator "B" Phase U-V-W Current Sensor Signal Compare Failure When the BUB1 terminal voltage is a certain value or more, the total value of the actuator motor current sensor for phase U, V and W exceeds a certain value continuously
(1 trip detection logic)
Shift control actuator assembly (shift actuator ECU) Does not come on Multi-information Display Error Message 
  • Displayed
Transmission A SAE: P18B9