Nissan Altima B1023 Passenger Air Bag Off Indicator

Possible Causes of DTC B1023

Article 1 provides valuable insights into the possible causes of Diagnostic Trouble Code (DTC) B1023. It highlights several issues that may trigger this code, including:

1. Faulty Passenger A/B Indicator

  • The Passenger A/B Indicator may be malfunctioning, leading to the activation of the DTC B1023.

2. Passenger A/B Indicator Harness Issues

  • The harness associated with the Passenger A/B Indicator might be open, shorted, or experiencing poor electrical connections.

3. Diagnosis Sensor Unit Problems

  • The Diagnosis Sensor Unit could be faulty, contributing to the occurrence of DTC B1023.

It’s essential to note that these causes may not cover all potential problems, and there could be other underlying issues.

How to Fix DTC B1023

When faced with the DTC B1023, it’s crucial to follow a systematic approach for resolution. Article 1 suggests the following steps:

1. Visual Inspection

  • Inspect the wiring harness and connectors related to the listed possible causes.
  • Look for damaged components and check for issues like broken, bent, pushed out, or corroded connector pins.

2. Cost of Diagnosing the Code

  • The cost to diagnose the B1023 code typically involves 1.0 hour of labor.
  • Labor rates at auto repair shops vary based on location, vehicle make and model, and engine type, with charges ranging from $75 to $150 per hour.

3. Code B1023 Symptoms

  • One common symptom associated with Code B1023 is the illumination of the Air Bag Warning Light.

Understanding the B1023 Code

Article 1 provides a comprehensive explanation of what the B1023 code means:

– Passenger A/B Indicator Functionality

  • The Passenger A/B Indicator plays a crucial role in suppressing the deployment of the passenger airbag when the passenger seat is empty or occupied by a child or child seat.
  • Malfunctioning of this system triggers the blinking of the SRS airbag warning lamp, alerting the driver to the issue.

– OBDII Code B1023 Details

  • Additional information and resources related to OBDII Code B1023 are available for specific makes such as Buick, Cadillac, Chevrolet, GMC, Infiniti, and Nissan.

Nissan Altima 2007-2012 Service Manual Insights

Article 2 provides specific details about DTC B1023 in the context of the Nissan Altima 2007-2012 model:


  • Describes the DTC B1023 as related to the front passenger air bag off indicator, which is wired to the air bag diagnosis sensor unit.

– DTC Logic and Confirmation Procedure

  • Outlines the logic and procedures for confirming the presence of DTC B1023, with or without CONSULT-lll diagnostic equipment.

– Diagnosis Procedure (Component Diagnosis)

  • Provides a step-by-step diagnosis procedure involving checks on harness connectors, wiring harness, and the air bag diagnosis sensor unit.

Precautions for SRS Service

Both articles stress the importance of taking precautions during SRS (Supplemental Restraint System) service, including avoiding probing electrical connectors, not disassembling safety belt components, and waiting at least 3 minutes after disconnecting the battery before servicing.

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