AutoCodes – Generic – B1797

B1797 Code - Lamp Headlamp Low-Beam Circuit Short To Ground

Quick Answer

The Body Control Module (BCM) monitors the Lamp Headlamp Low-Beam. Common causes include Faulty Lamp Headlamp Low-Beam, Lamp Headlamp Low-Beam harness is open or shorted, Lamp Headlamp Low-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: B1797 indicates Lamp Headlamp Low-Beam Circuit Short To Ground.
Common causes: Common causes include Faulty Lamp Headlamp Low-Beam, Lamp Headlamp Low-Beam harness is open or shorted, Lamp Headlamp Low-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 5,388

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 Jul 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1797 Description

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

OBDII Code B1797 - Lamp Headlamp Low-Beam Circuit Short To Ground - AutoCodes.com — B1797 Code - Lamp Headlamp Low-Beam Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1797?

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

How to Fix the DTC B1797?

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 B1797 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 B1797 code?

Need more information on how to fix the B1797 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1797 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1797 Lexus — Calibration Malfunction
B1797 Scion — Calibration Malfunction
B1797 Toyota — Calibration 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 B1797 Code

1. What are common symptoms of OBDII code B1797 (Lamp Headlamp Low-Beam Circuit Short To Ground)?

- Common symptoms include low-beam headlight not working, flickering headlight, or a headlight that remains on even when the vehicle is turned off.

2. What are the possible causes of OBDII code B1797?

- Possible causes include a short to ground in the low-beam headlamp circuit, damaged wiring or connectors, a faulty headlamp bulb, or a malfunctioning headlamp control module.

3. How can I diagnose the issue related to OBDII code B1797?

- Diagnose the issue by visually inspecting the headlamp wiring and connectors, testing the headlamp bulb for continuity, and using a multimeter to check for a short to ground in the circuit.

4. What are some repair tips for fixing OBDII code B1797?

- Repair tips include repairing or replacing damaged wiring, connectors, or the headlamp bulb, resetting the fault codes after repairs, and ensuring proper grounding of the headlamp circuit.

5. Can I drive my vehicle with OBDII code B1797?

- It is not recommended to drive your vehicle with a malfunctioning headlamp as it may affect visibility and safety, especially at night or in low-light conditions.

6. Will resetting the fault codes make OBDII code B1797 go away permanently?

- Resetting the fault codes may temporarily clear the code, but if the underlying issue causing the code is not fixed, it is likely to reappear upon the next system check.

7. How much does it typically cost to repair OBDII code B1797?

- The cost of repairs for OBDII code B1797 can vary depending on the cause of the issue, but it may range from a simple bulb replacement to more extensive wiring repairs.

8. Can a DIY enthusiast fix OBDII code B1797 at home?

- Depending on your level of automotive knowledge and experience, you may be able to diagnose and repair OBDII code B1797 at home by following repair guides or consulting with professionals if needed.

9. Is OBDII code B1797 a common issue in certain car makes and models?

- OBDII code B1797 related to the headlamp low-beam circuit short to ground can occur in various car makes and models that are equipped with OBDII systems and low-beam headlamp circuits.

10. How urgent is it to address OBDII code B1797?

- It is recommended to address OBDII code B1797 promptly to ensure proper functioning of the vehicle's headlamp system and maintain safe driving conditions, especially during nighttime or low visibility situations.