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Engine-Codes – Generic – B1315

B1315 Code - Backlighting Non Reflective Controls Illumination Output Circuit Short

Quick Answer

The B1315 diagnostic trouble code (DTC) indicates a potential issue with the backlighting non-reflective controls illumination output circuit in a vehicle. Common causes include Faulty wiring or connectors in the backlighting circuit, Short circuit due to water intrusion or corrosion, Damage to the backlighting control module. 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
B1315 indicates Backlighting Non Reflective Controls Illumination Output Circuit Short.
Common causes
Common causes include Faulty wiring or connectors in the backlighting circuit, Short circuit due to water intrusion or corrosion, Damage to the backlighting control module.
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 30, 2024
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Code B1315 Description

The B1315 diagnostic trouble code (DTC) indicates a potential issue with the backlighting non-reflective controls illumination output circuit in a vehicle. This code specifically points to a short circuit in the circuit responsible for illuminating the controls that are not reflective. These controls include various buttons, knobs, switches, or indicators on the dashboard, center console, or steering wheel that are backlit for visibility in low-light conditions. When this circuit experiences a short, it can lead to a loss of illumination in these controls, affecting the driver's ability to operate the vehicle safely, especially at night or in dimly lit areas.

OBDII Code B1315 - Backlighting Non Reflective Controls Illumination Output Circuit Short
B1315 Code - Backlighting Non Reflective Controls Illumination Output Circuit Short

Common Causes of B1315

  1. Faulty wiring or connectors in the backlighting circuit
  2. Short circuit due to water intrusion or corrosion
  3. Damage to the backlighting control module
  4. Malfunctioning backlighting bulbs or LEDs
  5. Electrical issues such as a blown fuse or relay in the circuit

Symptoms of B1315

  1. Dim or flickering backlighting on non-reflective controls
  2. Inoperable backlighting on certain controls
  3. Complete loss of backlighting on non-reflective controls
  4. Dashboard warning light related to illumination system
  5. Difficulty reading or identifying controls in low-light conditions

How to Fix B1315

  1. Begin by visually inspecting the wiring and connectors in the backlighting circuit for any signs of damage or corrosion.
  2. Check the control module responsible for the backlighting and test it for proper functionality.
  3. Test the backlighting bulbs or LEDs to ensure they are working correctly and replace any faulty ones.
  4. Inspect the fuses and relays related to the backlighting circuit and replace any that are blown or faulty.
  5. Clear the diagnostic trouble codes from the vehicle's system and test the backlighting controls to verify that the issue has been resolved.

Cost to Fix B1315

The typical repair costs for addressing a backlighting non-reflective controls illumination output circuit short can range from $100 to $300, depending on the extent of the issue and the specific components that need to be replaced. This estimate includes the cost of parts and labor. It's important to note that the actual cost may vary based on the vehicle make and model, the location of the repair shop, and any additional diagnostic or repair work required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate tailored to your specific situation.

What does this mean?

Tech Notes for B1315

B1315:11 Backlighting Non Reflective Controls Illumination Output Circuit Short To Ground
B1315:15 Backlighting Non Reflective Controls Illumination Output Circuit Short To Battery or Open

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Code B1315 Information for Specific Makes

  • B1315 Ford — Backlighting Non Reflective Controls Illumination Output Circuit Short
  • B1315 Lincoln — Backlighting Non Reflective Controls Illumination Output Circuit Short
  • B1315 Mercury — Backlighting Non Reflective Controls Illumination Output Circuit Short
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 B1315 Code

1. What are common symptoms of OBDII code B1315?

The common symptoms of OBDII code B1315 include non-functional backlighting on controls, dim or flickering illumination, or complete loss of backlighting on non-reflective controls.

2. What can cause the OBDII code B1315 to trigger?

The OBDII code B1315 is typically triggered by a short circuit in the backlighting non-reflective controls illumination output circuit, which may be caused by damaged wiring, a faulty control module, or a defective component.

3. How can I diagnose the cause of OBDII code B1315?

To diagnose the cause of OBDII code B1315, you can start by visually inspecting the wiring and connectors for any visible damage. Using a multimeter, you can test the circuit for continuity and check the control module for proper operation.

4. What are some repair tips for fixing OBDII code B1315?

Repair tips for fixing OBDII code B1315 include repairing or replacing damaged wiring, connectors, or components in the backlighting circuit. Additionally, resetting the control module and clearing the code may resolve the issue.

5. Can I drive my vehicle with OBDII code B1315?

It is generally safe to drive your vehicle with OBDII code B1315, as long as there are no other associated issues affecting the performance or safety of the vehicle. However, it is recommended to address the underlying problem as soon as possible.

6. How much does it cost to repair OBDII code B1315?

The cost to repair OBDII code B1315 can vary depending on the extent of the damage and the specific components that need to be replaced. It is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

7. Is OBDII code B1315 a common issue in certain vehicle makes and models?

OBDII code B1315 may be more common in certain vehicle makes and models that have non-reflective controls with backlighting. It is always recommended to check with the manufacturer or consult a reliable automotive resource for more specific information.

8. Can a DIY enthusiast fix OBDII code B1315 at home?

A DIY enthusiast with the necessary knowledge and tools may be able to diagnose and repair OBDII code B1315 at home. However, it is important to exercise caution and follow proper procedures to avoid causing further damage to the vehicle.

9. Will OBDII code B1315 cause my vehicle to fail an emissions test?

OBDII code B1315 is related to the backlighting of non-reflective controls and is not directly related to emissions. Therefore, it is unlikely to cause your vehicle to fail an emissions test. However, it is still recommended to address the issue promptly.

10. How can I prevent OBDII code B1315 from recurring in the future?

To prevent OBDII code B1315 from recurring in the future, you can ensure regular maintenance of the electrical system, inspect wiring and connectors for damage, and address any issues promptly to avoid further complications.

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