B2152 – OBD-II DTC

OBD-II DTC B2152 – Seat Rear Vertical Motor Position Out of Range

DTC B2152 meaning

DTC B2152 refers to a diagnostic trouble code indicating that the rear vertical motor position of a seat is out of range. This code is specific to the seat adjustment system, which is responsible for controlling the vertical position of the rear seat. When the system detects that the motor’s position is not within the expected range, it triggers this code to alert the technician of a potential issue.

DTC B2152 symptoms

Common symptoms associated with DTC B2152 may include:

• The rear seat does not adjust vertically.
• Unusual noises coming from the seat adjustment mechanism.
• Warning lights or messages on the dashboard related to seat adjustments.
• Inconsistent seat positioning or failure to hold a set position.

DTC B2152 causes

Several factors can lead to the triggering of DTC B2152, including:

• Faulty rear vertical motor.
• Wiring issues, such as damaged or corroded connectors.
• Malfunctioning seat position sensors.
• Software glitches in the vehicle’s control module.
• Mechanical obstructions preventing the seat from moving properly.

DTC B2152 seriousness

DTC B2152 is considered a moderate issue. While it may not affect the vehicle’s overall drivability, it can impact passenger comfort and safety. A malfunctioning seat adjustment system can lead to improper seating positions, which may affect the effectiveness of seat belts and airbags in the event of a collision.

How to diagnose DTC B2152

To diagnose DTC B2152, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B2152 code.
2. Inspect the seat adjustment system for any visible damage or obstructions.
3. Check the wiring and connectors for signs of wear, corrosion, or disconnection.
4. Test the rear vertical motor for proper operation using a multimeter.
5. Examine the seat position sensors for functionality.
6. Clear the code and perform a seat adjustment test to see if the code reappears.

How to fix DTC B2152 step-by-step instructions

To fix DTC B2152, follow these steps:

1. Identify and repair any damaged wiring or connectors related to the rear vertical motor.
2. If the rear vertical motor is faulty, replace it with a new or refurbished unit.
3. Replace any malfunctioning seat position sensors.
4. Ensure that there are no mechanical obstructions preventing the seat from moving.
5. Recheck all connections and ensure they are secure.
6. Clear the DTC using an OBD-II scanner and test the seat adjustment system to confirm the issue is resolved.

How to erase DTC B2152

To erase DTC B2152, 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 “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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