Lexus NX: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Occupant Classification System

DTC No.

Detection Item

Link

B1771

Passenger Side Buckle Switch Circuit Malfunction

B1780

Front Occupant Classification Sensor LH Circuit Malfunction

B1782

Rear Occupant Classification Sensor LH Circuit Malfunction

B1785

Front Occupant Classification Sensor LH Collision Detection

B1787

Rear Occupant Classification Sensor LH Collision Detection

B1790

Center Airbag Sensor Assembly Communication Circuit Malfunction

B1793

Occupant Classification Sensor Power Supply Circuit Malfunction

B1794

Open in Occupant Classification ECU Battery Positive Line

B1795

Occupant Classification ECU Malfunction

B1796

Sleep Operation Failure of Occupant Classification ECU

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 Passenger Side Buckle Switch Circuit Malfunction (B1771)

DESCRIPTION The front passenger side buckle switch circuit consists of the occupant detection ECU and front seat inner belt assembly RH. DTC B1771 is stored when a malfunction is detected in the front

 Front Occupant Classification Sensor LH Circuit Malfunction (B1780)

DESCRIPTION The front occupant classification sensor LH circuit consists of the occupant detection ECU and front occupant classification sensor LH. DTC B1780 is stored when a malfunction is detected i

 Rear Occupant Classification Sensor LH Circuit Malfunction (B1782)

DESCRIPTION The rear occupant classification sensor LH circuit consists of the occupant detection ECU and rear occupant classification sensor LH. DTC B1782 is stored when a malfunction is detected in

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 PBD Unit Pulse Sensor LH Circuit (B2226)

DESCRIPTION This DTC is output when the multiplex network door ECU detects a power back door unit assembly set LH pulse malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area B2226 PBD Unit Pulse Sensor LH Circuit Multiplex network door ECU detects power back door

 Height Control Sensor Malfunction (B2416,B241A)

DESCRIPTION The headlight ECU sub-assembly LH supplies 5 V to the rear height control sensor LH, reads changes in the voltage that occur due to height sensor resistance changes according to the vehicle height, and performs auto leveling control. DTC No. Detection Item DTC Detection Condition

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