AutoCodes – Generic – B1570

B1570 Code - Lamp Headlamp High-Beam Circuit Short To Ground

Quick Answer

The Body Control Module (BCM) monitors the Lamp Headlamp High-Beam. Common causes include Faulty Lamp Headlamp High-Beam, Lamp Headlamp High-Beam harness is open or shorted, Lamp Headlamp High-Beam 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: B1570 indicates Lamp Headlamp High-Beam Circuit Short To Ground.
Common causes: Common causes include Faulty Lamp Headlamp High-Beam, Lamp Headlamp High-Beam harness is open or shorted, Lamp Headlamp High-Beam 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 11,286

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 May 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1570 Description

The Body Control Module (BCM) monitors the Lamp Headlamp High-Beam. The BCM sets the OBDII code when the Lamp Headlamp High-Beam is not to factory specifications.

OBDII Code B1570 - Lamp Headlamp High-Beam Circuit Short To Ground - AutoCodes.com — B1570 Code - Lamp Headlamp High-Beam Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1570?

Faulty Lamp Headlamp High-Beam
Lamp Headlamp High-Beam harness is open or shorted
Lamp Headlamp High-Beam circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1570?

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 B1570 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 B1570 code?

Need more information on how to fix the B1570 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1570 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1570 Chrysler — USB Communication Overcurrent
B1570 Dodge — USB Communication Overcurrent
B1570 Jeep — USB Communication Overcurrent
B1570 Lexus — Manual Switch Red Indicator Malfunction
B1570 RAM — USB Communication Overcurrent
B1570 Toyota — Manual Switch Red Indicator Malfunction

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 B1570 Code

1. What are the common symptoms of OBDII code B1570 (Lamp Headlamp High-Beam Circuit Short To Ground)?

- Common symptoms include the high-beam headlamp not functioning, the high-beam indicator staying on constantly, or blown fuses related to the high-beam circuit.

2. What can cause OBDII code B1570 to trigger?

- This code is typically triggered by a short circuit between the high-beam headlamp circuit and ground, often caused by damaged wiring, a faulty headlamp bulb, or a faulty headlamp switch.

3. How can I diagnose OBDII code B1570?

- Diagnosis involves visually inspecting the wiring harness and connectors for any visible damage, testing the headlamp bulb for continuity, and using a multimeter to check for shorts to ground in the high-beam circuit.

4. Can I still drive my vehicle with OBDII code B1570 present?

- It is not recommended to drive with this code present, as it may result in unsafe driving conditions, especially at night when high-beam functionality is crucial for visibility.

5. How do I repair OBDII code B1570?

- Repair involves locating and repairing the short circuit in the high-beam headlamp circuit, replacing any damaged wiring or components, and clearing the trouble code with an OBDII scanner.

6. Are there any DIY tips for fixing OBDII code B1570?

- DIY tips include checking the headlamp bulb socket for corrosion, ensuring proper grounding of the headlamp assembly, and carefully inspecting the wiring for any signs of wear or damage.

7. Can a faulty headlamp switch cause OBDII code B1570?

- Yes, a faulty headlamp switch can potentially cause a short to ground in the high-beam circuit, triggering OBDII code B1570. It is recommended to test the switch as part of the diagnostic process.

8. Will replacing the headlamp bulb fix OBDII code B1570?

- In some cases, a faulty headlamp bulb can cause a short to ground and trigger this code. Replacing the headlamp bulb may resolve the issue, but it is important to diagnose the root cause of the short circuit.

9. Is OBDII code B1570 a serious issue?

- While this code may not affect the overall drivability of the vehicle, it is important to address it promptly to ensure proper functioning of the high-beam headlamp and maintain safe driving conditions, especially at night.

10. Can weather conditions impact OBDII code B1570?

- Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate a short circuit in the high-beam headlamp circuit, leading to the triggering of OBDII code B1570. Inspecting the wiring for weather-related damage is advisable.