B2305 – OBD-II DTC

OBD-II DTC B2305 – Seat Headrest Feedback Potentiometer Circuit Short to Ground

DTC B2305 meaning

DTC B2305 refers to a diagnostic trouble code indicating a problem with the seat headrest feedback potentiometer circuit. This code specifically points to a short circuit to ground within the feedback potentiometer circuit, which is responsible for monitoring the position of the seat headrest. The potentiometer provides input to the vehicle’s control module, allowing it to adjust the headrest position based on user preferences or safety requirements.

DTC B2305 symptoms

Common symptoms associated with DTC B2305 may include:

• Inoperative headrest adjustment
• Headrest stuck in one position
• Warning lights illuminated on the dashboard
• Possible related seat adjustment issues

DTC B2305 causes

Several factors can lead to the occurrence of DTC B2305, including:

• Faulty headrest feedback potentiometer
• Wiring issues, such as frayed or damaged wires
• Corrosion or poor connections in the circuit
• Faulty control module

DTC B2305 seriousness

The seriousness of DTC B2305 can vary. While it may not pose an immediate safety risk, it can affect the functionality of the seat headrest, which is important for passenger comfort and safety. If left unaddressed, it may lead to further electrical issues or complications with other seat adjustments.

How to diagnose DTC B2305

To diagnose DTC B2305, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B2305 code.
2. Inspect the wiring and connectors associated with the headrest feedback potentiometer for damage or corrosion.
3. Test the potentiometer using a multimeter to check for proper resistance values.
4. Check the control module for any additional codes or malfunctions.
5. Perform a visual inspection of the seat adjustment system for any mechanical issues.

How to fix DTC B2305 step-by-step instructions

To fix DTC B2305, follow these step-by-step instructions:

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 headrest feedback potentiometer.
3. Replace the headrest feedback potentiometer if it is found to be faulty.
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 headrest adjustment to ensure proper functionality.

How to erase DTC B2305

To erase DTC B2305, 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 verify that the code does not reappear.

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.