AutoCodes – Generic – B1501

B1501 Code - Lamp Turn Signal Left Circuit Short To Battery

Quick Answer

The Body Control Module (BCM) monitors the Lamp Turn Signal Left. Common causes include Faulty Lamp Turn Signal Left, Lamp Turn Signal Left harness is open or shorted, Lamp Turn Signal Left 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: B1501 indicates Lamp Turn Signal Left Circuit Short To Battery.
Common causes: Common causes include Faulty Lamp Turn Signal Left, Lamp Turn Signal Left harness is open or shorted, Lamp Turn Signal Left 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 9,191

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 Apr 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1501 Description

The Body Control Module (BCM) monitors the Lamp Turn Signal Left. The BCM sets the OBDII code when the Lamp Turn Signal Left is not to factory specifications.

OBDII Code B1501 - Lamp Turn Signal Left Circuit Short To Battery - AutoCodes.com — B1501 Code - Lamp Turn Signal Left Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B1501?

Faulty Lamp Turn Signal Left
Lamp Turn Signal Left harness is open or shorted
Lamp Turn Signal Left circuit poor electrical connection

How to Fix the DTC B1501?

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 B1501 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 B1501 code?

Need more information on how to fix the B1501 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1501 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1501 Subaru — Power Supply System Error Detection

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 B1501 Code

1. What are the common symptoms of OBDII code B1501 (Lamp Turn Signal Left Circuit Short To Battery)?

- Common symptoms include the left turn signal not working, rapid blinking of the turn signal, or the left turn signal staying on without blinking.

2. What can cause the OBDII code B1501 to appear?

- The code B1501 is triggered when there is a short circuit between the left turn signal circuit and the battery power source.

3. How can I diagnose the issue related to code B1501?

- A thorough visual inspection of the wiring harness for any visible damage, checking the turn signal bulb, and using a multimeter to test for continuity can help diagnose the problem.

4. What are some possible repair tips for fixing the Lamp Turn Signal Left Circuit Short To Battery issue?

- Repair tips include repairing or replacing damaged wiring, checking and replacing the turn signal bulb, and ensuring proper grounding of the circuit.

5. Can a DIY enthusiast fix the OBDII code B1501 issue or is professional assistance recommended?

- Depending on your skills and knowledge of automotive electrical systems, you may be able to fix the issue yourself. However, if you are unsure or uncomfortable working with electrical systems, it is recommended to seek professional help.

6. Is it safe to continue driving with the OBDII code B1501 present?

- It is not recommended to continue driving with the B1501 code as it can affect the visibility of your turn signal, compromising your safety on the road.

7. How can I prevent the Lamp Turn Signal Left Circuit Short To Battery issue from recurring?

- To prevent the issue from happening again, ensure proper installation of the turn signal bulb, avoid overloading the circuit with aftermarket accessories, and regularly inspect the wiring for any wear or damage.

8. Will resetting the OBDII code B1501 turn off the check engine light?

- Simply resetting the code may turn off the check engine light temporarily, but the underlying issue causing the code will need to be addressed to prevent the light from coming back on.

9. Are there any specific vehicle makes or models more prone to experiencing the B1501 code?

- The B1501 code can potentially occur in any vehicle with a malfunctioning left turn signal circuit, regardless of the make or model.

10. Can extreme weather conditions contribute to the occurrence of the OBDII code B1501?

- While extreme weather conditions may not directly cause the B1501 code, they can exacerbate existing electrical issues, making it important to keep your vehicle's electrical system well-maintained.