AutoCodes – Ford – B2420 Ford

B2420 Ford Code - Power Liftgate/Trunk Sensor 2 Invalid

Quick Answer

When the power liftgate moves in the close direction, the Liftgate/Trunk Module (LTM) monitors the pinch strips and motor position sensor for obstacle detection. Common causes include Liftgate alignment, Faulty Power Liftgate/Trunk Sensor 2, Power Liftgate/Trunk Sensor 2 harness is open or shorted. 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: B2420 Ford indicates Power Liftgate/Trunk Sensor 2 Invalid.
Common causes: Common causes include Liftgate alignment, Faulty Power Liftgate/Trunk Sensor 2, Power Liftgate/Trunk Sensor 2 harness is open or shorted.
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.

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Code Popularity 1,385

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2420 Ford Description

When the power liftgate moves in the close direction, the Liftgate/Trunk Module (LTM) monitors the pinch strips and motor position sensor for obstacle detection. If the LTM detects an obstacle, it reverses the power liftgate. The LTM monitors the left and right pinch strips and if either pinch strip is pressed the LTM reverses the power liftgate. The LTM monitors the position sensor feedback for position and movement. If the LTM is unable to determine the liftgate position or the movement indicates an obstacle the LTM reverses the power liftgate. The LTM also monitors the power liftgate latch status once the liftgate closes to a secondary latch position. If the liftgate is unable to obtain a primary latch position the LTM aborts the power close.

OBDII Code B2420 Ford - Power Liftgate/Trunk Sensor 2 Invalid - AutoCodes.com — B2420 Ford Code - Power Liftgate/Trunk Sensor 2 Invalid

What does this mean?

What are the Possible Causes of the DTC B2420 Ford?

Liftgate alignment
Faulty Power Liftgate/Trunk Sensor 2
Power Liftgate/Trunk Sensor 2 harness is open or shorted
Power Liftgate/Trunk Sensor 2 circuit poor electrical connection
Faulty Power liftgate latch
Faulty Power liftgate motor
Faulty Liftgate/Trunk Module (LTM)

How to Fix the DTC B2420 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2420 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 B2420 Ford Code

1. What are the common symptoms of OBDII code B2420 Ford (Power Liftgate/Trunk Sensor 2 Invalid)?

The common symptoms include the power liftgate or trunk not functioning properly, failure to open or close automatically, and dashboard warning lights related to the liftgate system.

2. What could cause the OBDII code B2420 Ford to trigger?

The code B2420 Ford is typically triggered by a faulty power liftgate/trunk sensor 2, damaged wiring or connectors in the sensor circuit, or issues with the liftgate control module.

3. How can I diagnose the source of the OBDII code B2420 Ford?

Diagnosing the code involves using a diagnostic scanner to retrieve the code, inspecting the power liftgate/trunk sensor 2 for any damage, checking the wiring and connectors for any faults, and testing the liftgate control module if necessary.

4. Can I continue to use my vehicle if the OBDII code B2420 Ford is present?

While the vehicle should still be drivable with the code present, it is recommended to address the issue promptly to prevent any further damage to the power liftgate system and ensure its proper functioning.

5. What are some repair tips for fixing the OBDII code B2420 Ford?

Repair tips include checking and repairing any damaged wiring or connectors in the sensor circuit, replacing the faulty power liftgate/trunk sensor 2, and resetting the liftgate control module to clear the code.

6. Is it possible to reset the OBDII code B2420 Ford without fixing the underlying issue?

Resetting the code without addressing the root cause may temporarily clear the warning lights, but the issue will likely reoccur if the sensor or wiring problem is not fixed.

7. How much does it typically cost to repair the OBDII code B2420 Ford?

The cost of repair can vary depending on the extent of the issue, the need for parts replacement, and labor charges. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can I fix the OBDII code B2420 Ford on my own, or should I seek professional help?

While some DIY enthusiasts may be able to troubleshoot and repair the issue themselves, it is recommended to seek professional help, especially when dealing with complex electrical systems like the power liftgate.

9. Are there any preventive measures to avoid encountering the OBDII code B2420 Ford in the future?

Regularly inspecting the power liftgate/trunk sensor 2, ensuring proper maintenance of the liftgate system, and addressing any issues promptly can help prevent the recurrence of the code B2420 Ford.

10. Will fixing the OBDII code B2420 Ford improve the overall performance of my vehicle?

Fixing the code will restore the proper functioning of the power liftgate system, ensuring convenience and safety when operating the liftgate or trunk.