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Engine-Codes – Generic – B1373

B1373 Code - Front Right Door Handle Unlock Circuit No Sub Type Information

Quick Answer

The B1373 code refers to an issue with the front right door handle unlock circuit in the vehicle. Common causes include Faulty door lock actuator in the front right door, Broken or damaged wiring in the unlock circuit, Corrosion or poor connections in the wiring harness. 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
B1373 indicates Front Right Door Handle Unlock Circuit No Sub Type Information.
Common causes
Common causes include Faulty door lock actuator in the front right door, Broken or damaged wiring in the unlock circuit, Corrosion or poor connections in the wiring harness.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
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Code B1373 Description

The B1373 code refers to an issue with the front right door handle unlock circuit in the vehicle. This code indicates that there is a malfunction or failure in the circuit that controls the unlocking mechanism for the front right door. This can prevent the door from unlocking properly when the vehicle is unlocked, potentially leading to safety concerns and inconvenience for the driver and passengers. The circuit may be experiencing issues such as a broken wire, faulty connection, or malfunctioning components.

OBDII Code B1373 - Front Right Door Handle Unlock Circuit No Sub Type Information
B1373 Code - Front Right Door Handle Unlock Circuit No Sub Type Information

Common Causes of B1373

  1. Faulty door lock actuator in the front right door.
  2. Broken or damaged wiring in the unlock circuit.
  3. Corrosion or poor connections in the wiring harness.
  4. Issues with the central locking system or control module.
  5. Water damage or exposure causing electrical issues in the door handle assembly.

Symptoms of B1373

  1. Inability to unlock the front right door using the key fob or door switch.
  2. Unusual clicking or buzzing sounds when attempting to unlock the door.
  3. The door may only unlock intermittently or require multiple attempts to unlock.
  4. Malfunctioning interior lights or door ajar warnings related to the front right door.
  5. Difficulty opening or closing the front right door due to the lock not disengaging properly.

How to Fix B1373

  1. Begin by diagnosing the specific cause of the issue using a scan tool to pinpoint the fault in the front right door unlock circuit.
  2. Inspect the door lock actuator in the front right door for any signs of damage or malfunction, replacing it if necessary.
  3. Check the wiring harness for any breaks, corrosion, or loose connections, repairing or replacing damaged sections as needed.
  4. Test the central locking system and control module to ensure they are functioning correctly, replacing any faulty components.
  5. Clear the diagnostic trouble codes and test the door handle unlock circuit to verify that the issue has been resolved.

Cost to Fix B1373

The cost of repairing the front right door handle unlock circuit can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the parts for this repair could range from $50 to $200, while labor costs could be between $100 and $300. Overall, the total repair cost for addressing the B1373 code may range from $150 to $500. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate based on your vehicle's make and model.

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Code B1373 Information for Specific Makes

  • B1373 Ford — Front Right Door Handle Unlock Circuit No Sub Type Information
  • B1373 Lincoln — Front Right Door Handle Unlock Circuit No Sub Type Information
  • B1373 Mercury — Front Right Door Handle Unlock Circuit No Sub Type Information
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 B1373 Code

1. What does the OBDII code B1373 indicate?

The code B1373 indicates an issue within the front right door handle unlock circuit, specifically signaling a malfunction with no further subtype information provided.

2. What are common symptoms associated with the B1373 code?

Common symptoms include the front right door not unlocking with the remote or automatic system, an unresponsive right front door handle, and possible activation of the security alarm when attempting to unlock the door.

3. What might cause the OBDII code B1373 to be triggered?

Possible causes for this code include a faulty front right door handle sensor, damaged wiring in the door handle circuit, or a malfunctioning door lock actuator.

4. How can I diagnose the problem leading to the B1373 code?

Diagnosis should start with a visual inspection of the wiring and connectors in the front right door handle circuit. Use a multimeter to check for continuity and test the door handle sensor and lock actuator for functionality.

5. Are there any quick checks I can perform for code B1373 before going to a mechanic?

You can perform a basic check of the front right door handle area for any obvious signs of damage or loose connections. Also, ensure that the door handle is not mechanically sticking or jammed.

6. What repair steps are typically taken to resolve code B1373?

Repairing this issue may involve replacing the faulty door handle sensor, repairing or replacing damaged wires in the unlock circuit, or replacing the door lock actuator if found to be defective.

7. Is it safe to drive with the B1373 code active?

While it may be safe to drive with this issue, the inability to unlock the front right door can be inconvenient and could pose safety issues in an emergency situation.

8. Will ignoring the B1373 code lead to further vehicle issues?

Ignoring the problem can lead to increased inconvenience, potential security issues, and possibly affect other components related to the vehicle’s locking and security system.

9. How urgent is it to address a B1373 code?

It is moderately urgent to address this issue, particularly if it affects your ability to unlock the door, which can be a significant inconvenience and a security concern.

10. Can a failed battery or alternator trigger the B1373 code?

While a failed battery or alternator is less likely to specifically cause this code, electrical issues or low voltage conditions can contribute to erratic behavior of electronic components like door locks.

Discuss the causes and fixes for B1373 OBDII Code

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