Engine-CodesLincoln – B120B Lincoln

B120B Lincoln Code - Passenger Seat Back Temperature Sensor

Quick Answer

The B120B diagnostic trouble code (DTC) for Lincoln vehicles specifically refers to the Passenger Seat Back Temperature Sensor. Common causes include Faulty passenger seat back temperature sensor, Damaged wiring or connectors related to the sensor, Corrosion or debris affecting the sensor's functionality. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B120B Lincoln indicates Passenger Seat Back Temperature Sensor.
Common causes
Common causes include Faulty passenger seat back temperature sensor, Damaged wiring or connectors related to the sensor, Corrosion or debris affecting the sensor's functionality.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B120B Lincoln Description

The B120B diagnostic trouble code (DTC) for Lincoln vehicles specifically refers to the Passenger Seat Back Temperature Sensor. This sensor is responsible for monitoring the temperature of the passenger seat back in the vehicle. The sensor plays a crucial role in ensuring passenger comfort by adjusting the climate control system based on the temperature readings. When this sensor malfunctions or fails, it can lead to discomfort for the passengers and potentially affect the overall performance of the climate control system.

OBDII Code B120B Lincoln - Passenger Seat Back Temperature Sensor
B120B Lincoln Code - Passenger Seat Back Temperature Sensor

Common Causes of B120B Lincoln

  1. Faulty passenger seat back temperature sensor.
  2. Damaged wiring or connectors related to the sensor.
  3. Corrosion or debris affecting the sensor's functionality.
  4. Electrical issues within the climate control system.
  5. Impact or damage to the sensor due to external factors.

Symptoms of B120B Lincoln

  1. Inaccurate temperature readings on the climate control system.
  2. Inconsistent heating or cooling of the passenger seat back.
  3. Climate control system not responding to temperature adjustments.
  4. Warning light illuminated on the dashboard related to the passenger seat back temperature sensor.

How to Fix B120B Lincoln

  1. Begin by diagnosing the issue using a diagnostic scan tool to confirm the B120B code.
  2. Inspect the passenger seat back temperature sensor for any visible damage or corrosion.
  3. Check the wiring and connectors for any signs of wear or disconnection.
  4. Replace the faulty sensor if necessary, ensuring proper installation and calibration.
  5. Clear the DTC and test the climate control system to verify that the issue has been resolved.

Cost to Fix B120B Lincoln

The typical repair costs for addressing the B120B code related to the Passenger Seat Back Temperature Sensor can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the parts for this repair can range from $50 to $150, while the labor costs can range from $100 to $200. Keep in mind that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It's recommended to consult with a qualified mechanic to get an accurate cost estimate for this repair.

Tech Notes for B120B Lincoln

B120B:01 Passenger Seat Back Temperature Sensor General Electrical Failure

B120B:98 Passenger Seat Back Temperature Sensor Component or System Over Temperature

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B120B Lincoln Code

1. What does the OBDII code B120B mean on a Lincoln?

B120B indicates a malfunction with the passenger seat back temperature sensor, which monitors the climate control in the passenger seat.

2. What are the symptoms of the B120B code?

Common symptoms include the passenger seat’s heated or cooled function not working properly or the seat climate control system being unresponsive.

3. What causes the B120B code on a Lincoln?

Potential causes include a faulty passenger seat back temperature sensor, damaged wiring, loose connections, or a failure in the seat climate control module.

4. Can the B120B code affect other seat functions?

Yes, it may interfere with the operation of heating and cooling features for the passenger seat but typically does not affect basic seat adjustments.

5. How can I diagnose the B120B code?

Use an OBDII scanner to confirm the code, then inspect the temperature sensor, wiring, and connectors for damage, corrosion, or loose connections.

6. How do you repair the B120B code?

Repairs may involve replacing the temperature sensor, repairing damaged wiring, cleaning corroded connectors, or recalibrating the seat control module.

7. Can I drive with the B120B code active?

Yes, the issue does not affect vehicle drivability, but the passenger seat climate control functions may not work properly.

8. How much does it cost to fix the B120B code on a Lincoln?

Costs vary depending on whether the sensor or wiring needs repair, but replacing the temperature sensor can range from $50 to $200, plus labor.

9. Can the B120B code clear itself?

No, the code will remain active until the underlying issue is resolved and the system is reset using an OBDII scanner.

10. Is the passenger seat back temperature sensor hard to replace?

Replacing the sensor may involve removing seat covers or panels, which can be challenging. Professional assistance is often recommended.

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