AutoCodes – Generic – C1862

C1862 Code - Battery Contactor Circuit Failure

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Battery Contactor. Common causes include Faulty Battery Contactor, Battery Contactor harness is open or shorted, Battery Contactor 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: C1862 indicates Battery Contactor Circuit Failure.
Common causes: Common causes include Faulty Battery Contactor, Battery Contactor harness is open or shorted, Battery Contactor 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 5,444

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 Dec 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1862 Description

The Anti-Lock Brake System (ABS) Module monitors the Battery Contactor. The ABS Module sets the OBDII code when the Battery Contactor is not to factory specifications.

OBDII Code C1862 - Battery Contactor Circuit Failure - AutoCodes.com — C1862 Code - Battery Contactor Circuit Failure

What does this mean?

What are the Possible Causes of the DTC C1862?

Faulty Battery Contactor
Battery Contactor harness is open or shorted
Battery Contactor circuit poor electrical connection

How to Fix the DTC C1862?

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 C1862 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 C1862 code?

Need more information on how to fix the C1862 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1862 code diagnosed by a professional: Find a repair shop in your area

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 C1862 Code

1. What are common symptoms of OBDII code C1862 (Battery Contactor Circuit Failure)?

The common symptoms of OBDII code C1862 may include difficulty starting the vehicle, loss of power to electrical components, and illumination of the battery warning light on the dashboard.

2. What are the possible causes of OBDII code C1862?

Possible causes of OBDII code C1862 (Battery Contactor Circuit Failure) include a faulty battery contactor, damaged wiring or connectors in the battery contactor circuit, or a problem with the battery itself.

3. How can I diagnose OBDII code C1862?

Diagnosing OBDII code C1862 typically involves using a diagnostic scan tool to retrieve the trouble code and then visually inspecting the battery contactor and its associated wiring for any visible damage or corrosion.

4. Can I still drive my vehicle with OBDII code C1862 present?

It is not recommended to drive your vehicle with OBDII code C1862 present, as it can lead to potential electrical issues and cause the vehicle to suddenly lose power while driving.

5. How can I repair OBDII code C1862?

Repairing OBDII code C1862 may involve replacing the faulty battery contactor, repairing or replacing damaged wiring or connectors, or addressing any underlying issues with the vehicle's battery.

6. Is it safe to reset the OBDII code C1862 without fixing the underlying issue?

Resetting OBDII code C1862 without addressing the underlying issue is not recommended, as the problem may persist and potentially lead to more severe electrical issues in the future.

7. Can a DIY enthusiast fix OBDII code C1862 at home?

Depending on the cause of OBDII code C1862, some DIY enthusiasts may be able to fix the issue at home by replacing the battery contactor or repairing damaged wiring. However, it is always recommended to seek professional help if unsure.

8. How much does it cost to repair OBDII code C1862 at a mechanic?

The cost of repairing OBDII code C1862 at a mechanic can vary depending on the cause of the issue, the labor rates in your area, and the cost of any replacement parts needed. It is advisable to get a diagnostic and repair estimate from a trusted mechanic.

9. Are there any preventive maintenance tips to avoid OBDII code C1862?

To help prevent OBDII code C1862, it is essential to regularly inspect and maintain the battery, battery contactor, and associated wiring. Keeping the electrical system in good condition can help prevent potential issues.

10. How urgent is it to address OBDII code C1862?

It is important to address OBDII code C1862 in a timely manner to avoid potential electrical failures and safety hazards while driving. Ignoring the issue can lead to more significant problems down the line.