AutoCodes – Generic – B1847

B1847 Code - Ignition Tamper Circuit Short To Battery

Quick Answer

The Body Control Module (BCM) monitors the Ignition Switch. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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: B1847 indicates Ignition Tamper Circuit Short To Battery.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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.

Save to My Repairs My Repairs

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

Code Popularity 3,761

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 02, 2019

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 B1847 Description

The Body Control Module (BCM) monitors the Ignition Switch. The BCM sets the OBDII code when the Ignition Switch is not to factory specifications.

OBDII Code B1847 - Ignition Tamper Circuit Short To Battery - AutoCodes.com — B1847 Code - Ignition Tamper Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B1847?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1847?

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 B1847 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 B1847 code?

Need more information on how to fix the B1847 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1847 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1847 Lexus — Short To Ground In Curtain Shield Squib Left 2nd Step Circuit
B1847 Scion — Short To Ground In Curtain Shield Squib Left 2nd Step Circuit
B1847 Toyota — Short To Ground In Curtain Shield Squib Left 2nd Step 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 B1847 Code

1. What are the common symptoms of OBDII code B1847 (Ignition Tamper Circuit Short To Battery)?

- Common symptoms include the vehicle not starting, the engine stalling unexpectedly, or the security light staying on.

2. What are the possible causes of OBDII code B1847?

- The code B1847 can be caused by a short circuit in the ignition tamper circuit, a faulty ignition switch, or damaged wiring.

3. How can I diagnose OBDII code B1847?

- Diagnosing code B1847 involves using a scan tool to retrieve the code, checking the ignition tamper circuit for shorts, and inspecting the ignition switch and wiring for damage.

4. Can I still drive my vehicle with OBDII code B1847?

- It is not recommended to drive your vehicle with code B1847, as it can lead to potential safety hazards and further damage to the vehicle's electrical system.

5. How can I repair OBDII code B1847?

- Repairing code B1847 involves fixing any short circuits in the ignition tamper circuit, replacing a faulty ignition switch, or repairing damaged wiring.

6. Will resetting the OBDII code B1847 make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not fixed, the code is likely to return.

7. How much does it cost to repair OBDII code B1847?

- The cost of repairing code B1847 can vary depending on the root cause of the issue, but it may involve replacing the ignition switch or repairing damaged wiring.

8. Can a DIY enthusiast fix OBDII code B1847?

- DIY enthusiasts with experience in automotive electrical systems may be able to diagnose and repair code B1847, but it is recommended to consult a professional if unsure.

9. Is OBDII code B1847 a common issue in certain vehicle makes and models?

- Code B1847 can be more common in certain vehicle makes and models known for ignition system issues, but it can occur in any OBDII-compliant vehicle.

10. How urgent is it to address OBDII code B1847?

- It is important to address code B1847 promptly to prevent potential safety hazards, further damage to the vehicle, and to ensure the vehicle operates correctly.