AutoCodes – Chevrolet – B0785 Chevrolet

B0785 Chevrolet Code - Two Wheel Drive High Range Indicator Circuit

Quick Answer

The Two Wheel Drive (2WD) High Range (HI) indicator circuit consists of a Light Emitting Diode (LED) feed circuit, an LED, and an LED control circuit. Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B0785 Chevrolet indicates Two Wheel Drive High Range Indicator Circuit.
Common causes: Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,052

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B0785 Chevrolet Description

The Two Wheel Drive (2WD) High Range (HI) indicator circuit consists of a Light Emitting Diode (LED) feed circuit, an LED, and an LED control circuit. The indicator dimming control circuit is the LED feed circuit and continuously supplies B+ to the 2WD HI, 4WD Auto, 4WD HI, and 4WD LO LEDs. When the 2WD HI mode has been selected by the driver, the Transfer Case Shift Control Module (TCCM) provides a ground through the 2WD HI indicator control circuit illuminating the LED.
The TCCM tests the 2WD HI indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the indicator dimming control circuit by grounding the 2WD HI indicator control circuit for 2 seconds during the Bulb Test at key ON.

OBDII Code B0785 Chevrolet - Two Wheel Drive High Range Indicator Circuit - AutoCodes.com — B0785 Chevrolet Code - Two Wheel Drive High Range Indicator Circuit

What does this mean?

What are the Possible Causes of the DTC B0785 Chevrolet?

Faulty Transfer Case Select Switch
Transfer Case Select Switch harness is open or shorted
Transfer Case Select Switch circuit poor electrical connection
Faulty Transfer Case Shift Control Module (TCCM)

How to Fix the DTC B0785 Chevrolet?

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 B0785 Chevrolet 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 B0785 Chevrolet code?

Need more information on how to fix the B0785 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0785 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

B0785 2014 Chevrolet Silverado — Two Wheel Drive High Range Indicator Circuit
B0785 2015 Chevrolet Silverado — Two Wheel Drive High Range Indicator Circuit
B0785 2016 Chevrolet Silverado — Two Wheel Drive High Range Indicator Circuit
B0785 2017 Chevrolet Silverado — Two Wheel Drive High Range Indicator Circuit
B0785 2018 Chevrolet Silverado — Two Wheel Drive High Range Indicator Circuit

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 B0785 Chevrolet Code

1. What are the common symptoms of OBDII code B0785 in a Chevrolet related to the Two Wheel Drive High Range Indicator Circuit?

- Common symptoms include the two-wheel-drive high range indicator not functioning properly or illuminating unexpectedly on the dashboard.

2. What are the possible causes of OBDII code B0785 in a Chevrolet related to the Two Wheel Drive High Range Indicator Circuit?

- Potential causes may include a faulty indicator switch, wiring issues, a malfunctioning transfer case control module, or a problem with the indicator circuit itself.

3. How can I diagnose OBDII code B0785 in a Chevrolet related to the Two Wheel Drive High Range Indicator Circuit?

- Diagnosis typically involves inspecting the indicator switch, checking the wiring for any faults or damage, testing the transfer case control module, and verifying the functionality of the indicator circuit.

4. Can OBDII code B0785 in a Chevrolet related to the Two Wheel Drive High Range Indicator Circuit cause any other issues besides a malfunctioning indicator?

- While the main issue is usually related to the indicator itself, it's important to address this code promptly as it can potentially affect the proper operation of the vehicle's two-wheel-drive system.

5. How can I repair OBDII code B0785 in a Chevrolet related to the Two Wheel Drive High Range Indicator Circuit?

- Repair solutions may involve replacing the faulty indicator switch, repairing any damaged wiring, resetting the transfer case control module, or addressing any issues found in the indicator circuit.

6. Is it safe to continue driving my Chevrolet with OBDII code B0785 related to the Two Wheel Drive High Range Indicator Circuit?

- While the vehicle is likely safe to drive, it's recommended to address the issue promptly to ensure the proper functioning of the two-wheel-drive system and to prevent any potential complications.

7. Can I reset OBDII code B0785 in a Chevrolet related to the Two Wheel Drive High Range Indicator Circuit myself?

- You can attempt to clear the code using an OBDII scanner, but it's important to first diagnose the root cause of the issue and address any necessary repairs to prevent the code from reoccurring.

8. How common is OBDII code B0785 in Chevrolet vehicles related to the Two Wheel Drive High Range Indicator Circuit?

- This code is relatively uncommon compared to other OBDII codes but can still occur in Chevrolet vehicles equipped with the relevant indicator system.

9. Are there any preventive maintenance measures I can take to avoid OBDII code B0785 related to the Two Wheel Drive High Range Indicator Circuit?

- Regularly inspecting the indicator system, ensuring proper maintenance of the transfer case components, and addressing any issues promptly can help prevent this code from occurring.

10. Can extreme weather conditions or off-road driving contribute to triggering OBDII code B0785 related to the Two Wheel Drive High Range Indicator Circuit in a Chevrolet?

- Yes, harsh environments and rough driving conditions can potentially lead to issues with the indicator system or related components, increasing the likelihood of triggering this code.