Lexus NX: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Lighting System

DTC No.

Detection Item

Link

B1244

Light Sensor Circuit Malfunction

B2430

LED Headlight LH Circuit Malfunction

B2431

LED Headlight RH Circuit Malfunction

U012587

Lost Communication with Multi-axis Acceleration Sensor Module Missing Message

U012987

Lost Communication with Brake System Control Module Missing Message

U014087

Lost Communication with Body Control Module Missing Message

U023587

Lost Communication with Cruise Control Front Distance Range Sensor Missing Message

U029387

Lost Communication With Hybrid Powertrain Control Module Missing Message

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 Vehicle Control History

VEHICLE CONTROL HISTORY CHECK THE VEHICLE CONTROL HISTORY (LIGHTING SYSTEM) HINT: The vehicle control history data (lighting system) stores the history of the reject function and system protection

 Light Sensor Circuit Malfunction (B1244)

DESCRIPTION The automatic light control sensor detects ambient light, converts it into an electrical signal and outputs it to the main body ECU (multiplex network body ECU). The main body ECU (multipl

 LED Headlight LH Circuit Malfunction (B2430,B2431)

DESCRIPTION The illumination of the low beam headlights is controlled by the main body ECU (multiplex network body ECU). When the headlights are turned on, the main body ECU (multiplex network body EC

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 Installation

INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure described below is for the LH side. PROCEDURE 1. INSTALL HEADLIGHT ASSEMBLY LH (a) Connect the connector and lock the connector lock lever. *a Connector Lock Lever Connect th

 Fuel Run Out (P3193)

DESCRIPTION The ECM receives the fuel empty low level (below approximately 8.4 L) signal from the combination meter assembly (meter ECU) to detect if the vehicle is running out of fuel. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory P3193 Fuel Run Out All

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