AutoCodes – Generic – B2903

B2903 Code - Power Liftgate Chime Output Circuit Short To Battery

Quick Answer

The Power Liftgate Chime is controlled by the Liftgate/Trunk Module (LTM). Common causes include Faulty Chime, Chime harness is open or shorted, Chime circuit poor electrical connection. 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: B2903 indicates Power Liftgate Chime Output Circuit Short To Battery.
Common causes: Common causes include Faulty Chime, Chime harness is open or shorted, Chime circuit poor electrical connection.
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 1,389

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 Feb 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2903 Description

The Power Liftgate Chime is controlled by the Liftgate/Trunk Module (LTM). To activate the chime, the LTM supplies a high frequency voltage and ground. If the feedback voltage is greater than 3.3VDC for more than 500ms, chime activation is disabled and the LTM sets this Diagnostic Trouble Code (DTC).

OBDII Code B2903 - Power Liftgate Chime Output Circuit Short To Battery - AutoCodes.com — B2903 Code - Power Liftgate Chime Output Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B2903?

Faulty Chime
Chime harness is open or shorted
Chime circuit poor electrical connection
Faulty Liftgate/Trunk Module (LTM)

How to Fix the DTC B2903?

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 B2903 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.

Need more information about the B2903 code?

Need more information on how to fix the B2903 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2903 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2903 Ford — Power Liftgate Chime Output Circuit Short To Battery
B2903 Lincoln — Power Liftgate Chime Output Circuit Short To Battery
B2903 Mercury — Power Liftgate Chime Output Circuit Short To Battery
B2903 Subaru — VDC Data Error

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 B2903 Code

1. What are the common symptoms of OBDII code B2903 (Power Liftgate Chime Output Circuit Short To Battery)?

- Common symptoms include a continuous chime or alert sounding from the power liftgate system, the power liftgate not operating properly, and potential draining of the vehicle's battery.

2. What can cause the OBDII code B2903 to trigger?

- This code is typically triggered by a short circuit in the power liftgate chime output circuit that leads to the battery.

3. How can I diagnose the issue related to the OBDII code B2903?

- Diagnosing the issue involves inspecting the wiring and connectors in the power liftgate chime output circuit for any visible damage or signs of a short circuit.

4. Can a DIY enthusiast repair the OBDII code B2903 issue?

- Depending on your skill level, repairing this issue may involve repairing or replacing damaged wiring or connectors in the power liftgate chime output circuit. Professional assistance may be necessary for complex repairs.

5. Are there any quick fixes to temporarily address the OBDII code B2903 symptoms?

- Disconnecting the power supply to the power liftgate chime output circuit can temporarily stop the continuous chime alert until the issue is properly diagnosed and repaired.

6. What are the potential risks of ignoring the OBDII code B2903?

- Ignoring this code can lead to continued annoyance from the chime alert, potential malfunction of the power liftgate system, and even drainage of the vehicle's battery over time.

7. Is it safe to continue driving with the OBDII code B2903 present?

- It is generally not recommended to continue driving with this code active, as it can indicate an underlying electrical issue that may affect the vehicle's operation.

8. How much does it typically cost to repair the OBDII code B2903 issue?

- The cost of repairing this issue can vary depending on the extent of the damage and whether professional assistance is required. Costs may include parts and labor for repairs.

9. Can extreme weather conditions contribute to triggering the OBDII code B2903?

- Extreme weather conditions, such as exposure to moisture or temperature fluctuations, can potentially exacerbate existing wiring issues and lead to the triggering of this code.

10. How long does it usually take to repair the OBDII code B2903 problem?

- The repair time for this issue can vary depending on the complexity of the repair needed and whether any additional diagnostics are required. It is best to consult with a professional for an accurate estimate.