B1832 – OBD-II DTC

OBD-II DTC B1832 – Door Unlock Disarm Switch Circuit Short To Battery

DTC B1832 meaning

DTC B1832 refers to a diagnostic trouble code indicating a short circuit in the door unlock disarm switch circuit to battery. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems for faults. When the vehicle’s control module detects that the voltage in the door unlock disarm switch circuit is higher than expected, it triggers this code.

DTC B1832 symptoms

Common symptoms associated with DTC B1832 may include:

• Inability to unlock or lock the doors using the remote or switch.
• Door locks may operate erratically or not at all.
• Illumination of the warning lights on the dashboard.
• Possible issues with the vehicle’s security system.

DTC B1832 causes

Several factors can lead to the triggering of DTC B1832, including:

• A short circuit in the wiring of the door unlock disarm switch.
• Faulty door unlock disarm switch itself.
• Corroded or damaged connectors in the circuit.
• Issues with the vehicle’s body control module (BCM).

DTC B1832 seriousness

The seriousness of DTC B1832 can vary. While it may not prevent the vehicle from operating, it can lead to security issues and inconvenience due to malfunctioning door locks. It is advisable to address this code promptly to ensure the proper functioning of the vehicle’s locking system and to avoid potential security vulnerabilities.

How to diagnose DTC B1832

To diagnose DTC B1832, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1832 code.
2. Inspect the door unlock disarm switch and its wiring for visible damage or corrosion.
3. Check the connectors for proper connection and signs of wear.
4. Test the door unlock disarm switch for proper operation using a multimeter.
5. Examine the body control module for any faults or issues.

How to fix DTC B1832 step-by-step instructions

To fix DTC B1832, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors related to the door unlock disarm switch.
3. If the door unlock disarm switch is faulty, replace it with a new one.
4. Reconnect all connectors and ensure they are secure.
5. Reconnect the vehicle’s battery.
6. Clear the DTC using an OBD-II scanner and test the system to ensure the issue is resolved.

How to erase DTC B1832

To erase DTC B1832, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the option to clear or erase trouble codes on the scanner.
4. Confirm the action to erase the DTC.
5. Disconnect the scanner and start the vehicle to check if the code returns.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.