Engine-CodesGeneric – B1248

B1248 Code - Right Rear Turn Indicator Circuit Short To Ground

Quick Answer

The B1248 diagnostic trouble code indicates that there is a short to ground in the right rear turn indicator circuit of the vehicle. Common causes include Damaged wiring in the right rear turn indicator circuit, Faulty right rear turn signal bulb, Defective turn signal switch. 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
B1248 indicates Right Rear Turn Indicator Circuit Short To Ground.
Common causes
Common causes include Damaged wiring in the right rear turn indicator circuit, Faulty right rear turn signal bulb, Defective turn signal switch.
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 07, 2024
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Code B1248 Description

The B1248 diagnostic trouble code indicates that there is a short to ground in the right rear turn indicator circuit of the vehicle. This means that there is an unintended connection between the power supply and the ground in the right rear turn signal circuit, causing the turn signal to malfunction or not work at all. This issue can result in the right rear turn signal not illuminating properly, which can pose a safety hazard on the road as it affects the vehicle's visibility to other drivers.

OBDII Code B1248 - Right Rear Turn Indicator Circuit Short To Ground
B1248 Code - Right Rear Turn Indicator Circuit Short To Ground

Common Causes of B1248

  1. Damaged wiring in the right rear turn indicator circuit.
  2. Faulty right rear turn signal bulb.
  3. Defective turn signal switch.
  4. Malfunctioning body control module.
  5. Corrosion or loose connections in the turn signal circuit.

Symptoms of B1248

  1. Right rear turn signal not illuminating or flashing intermittently.
  2. Rapid flashing of the right rear turn signal.
  3. Dashboard indicator for right turn signal blinking rapidly.
  4. Audible clicking noise from the turn signal relay when the right turn signal is activated.

How to Fix B1248

  1. Begin by visually inspecting the wiring harness and connections in the right rear turn indicator circuit for any signs of damage, corrosion, or loose connections.
  2. Test the right rear turn signal bulb to ensure it is functioning correctly. Replace the bulb if necessary.
  3. Check the turn signal switch for proper operation and replace it if found to be defective.
  4. Use a multimeter to test for continuity and voltage in the right rear turn indicator circuit to pinpoint the location of the short to ground.
  5. Repair or replace any damaged wiring, connectors, or components in the circuit to eliminate the short to ground and restore proper functionality to the right rear turn signal.

Cost to Fix B1248

The cost of repairing a right rear turn indicator circuit short to ground can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the replacement of a turn signal bulb or a faulty turn signal switch may cost between $50 to $100, including parts and labor. However, if the issue is more complex and requires extensive diagnostics and repairs to the wiring or body control module, the cost can increase significantly. It is advisable to consult with a qualified mechanic or auto repair shop for a precise cost estimate based on the specific circumstances of your vehicle. Labor rates typically range between $80 and $150 per hour, but can vary based on location and shop rates.

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Code B1248 Information for Specific Makes

  • B1248 Acura — Problem In The Rear Mode Control Motor Circuit, Linkage, Door, Or Motor
  • B1248 Ford — Right Rear Turn Indicator Circuit Short To Ground
  • B1248 Honda — Problem In The Rear Mode Control Motor Circuit, Linkage, Door, Or Motor
  • B1248 Lexus — AVC–LAN Communication Impossible
  • B1248 Lincoln — Right Rear Turn Indicator Circuit Short To Ground
  • B1248 Mercury — Right Rear Turn Indicator Circuit Short To Ground
  • B1248 Scion — AVC–LAN Communication Impossible
  • B1248 Toyota — AVC–LAN Communication Impossible
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 B1248 Code

1. What are common symptoms of OBDII code B1248?

- Common symptoms include the right rear turn signal not functioning properly, fast blinking of the turn signal, or a warning light on the dashboard.

2. What causes the OBDII code B1248 to trigger?

- The B1248 code is triggered when the right rear turn indicator circuit is detected to have a short to ground, meaning there is an electrical issue causing the circuit to lose proper functionality.

3. How can I diagnose the cause of the right rear turn indicator circuit short to ground?

- Diagnose by visually inspecting the wiring, connectors, and bulbs for any visible damage, and using a multimeter to check for continuity and shorts in the circuit.

4. What are some possible repair tips for resolving OBDII code B1248?

- Repair tips may include repairing or replacing damaged wiring, connectors, or bulbs in the right rear turn signal circuit to eliminate the short to ground issue.

5. Can a DIY enthusiast fix the OBDII code B1248 issue?

- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair the B1248 code by following a repair manual or utilizing online resources for guidance.

6. Is it safe to continue driving with OBDII code B1248 active?

- It is not recommended to continue driving with the B1248 code active, as it can lead to safety hazards by causing confusion for other drivers on the road due to malfunctioning turn signals.

7. How important is it to address OBDII code B1248 promptly?

- It is important to address the B1248 code promptly to ensure the proper functioning of the right rear turn signal, which is crucial for signaling intentions and maintaining road safety.

8. Can extreme weather conditions cause the right rear turn indicator circuit to short to ground?

- Extreme weather conditions such as heavy rain or snow could potentially cause electrical issues leading to a short to ground in the right rear turn indicator circuit.

9. Will resetting the OBDII system make the B1248 code disappear?

- Resetting the OBDII system may temporarily clear the B1248 code, but it will likely reappear if the underlying issue causing the right rear turn indicator circuit short to ground is not resolved.

10. How much does it typically cost to repair OBDII code B1248 at a mechanic or dealership?

- The cost of repairing OBDII code B1248 can vary depending on the extent of the damage and labor rates, but it may range from $100 to $300 for parts and labor at a mechanic or dealership.

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