B1544 – OBD-II DTC

OBD-II DTC B1544 – Seat Direction Switch Assembly Circuit Open

DTC B1544 meaning

DTC B1544 refers to a diagnostic trouble code indicating an open circuit in the seat direction switch assembly. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. The seat direction switch assembly is responsible for controlling the movement of the seat in various directions, and an open circuit suggests a break in the electrical connection or a malfunction in the switch itself.

DTC B1544 symptoms

Common symptoms associated with DTC B1544 may include:

• Inability to adjust the seat position using the switch.
• Seat position may be stuck in one location.
• Warning lights illuminated on the dashboard.
• Intermittent operation of the seat adjustment feature.

DTC B1544 causes

Several factors can lead to the occurrence of DTC B1544, including:

• Faulty seat direction switch assembly.
• Damaged wiring or connectors in the seat adjustment circuit.
• Corrosion or poor connections at the switch or related components.
• Issues with the vehicle’s body control module (BCM) that manages seat functions.

DTC B1544 seriousness

The seriousness of DTC B1544 can vary. While it may not affect the vehicle’s drivability, it can impact the comfort and safety of the driver and passengers. If the seat cannot be adjusted properly, it may lead to improper seating positions, which can be a safety concern in the event of an accident. Therefore, it is advisable to address this issue promptly.

How to diagnose DTC B1544

To diagnose DTC B1544, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1544 code.
2. Inspect the seat direction switch for visible damage or wear.
3. Check the wiring and connectors for signs of corrosion or disconnection.
4. Test the continuity of the wires in the seat adjustment circuit.
5. Examine the body control module for any fault codes or issues.

How to fix DTC B1544 step-by-step instructions

To fix DTC B1544, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Remove the seat direction switch assembly from the vehicle.
3. Inspect the switch for any visible damage and replace it if necessary.
4. Check the wiring harness and connectors for any signs of damage or corrosion repair or replace as needed.
5. Reconnect the seat direction switch and any connectors that were disconnected.
6. Reconnect the vehicle’s battery.
7. Use the OBD-II scanner to clear the DTC and test the seat adjustment functionality.

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.