AutoCodes – Dodge – B2874 Dodge

B2874 Dodge Code - Right Reverse Lamp 2 Control Circuit Short

Quick Answer

The Body Control Module (BCM) receives a communication network message from the Steering Column Control Module (SCCM) requesting turn signal lamp illumination. Common causes include Faulty Right Rear Turn Lamp Driver, Right Rear Turn Lamp Driver harness is open or shorted, Right Rear Turn Lamp Driver 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: B2874 Dodge indicates Right Reverse Lamp 2 Control Circuit Short.
Common causes: Common causes include Faulty Right Rear Turn Lamp Driver, Right Rear Turn Lamp Driver harness is open or shorted, Right Rear Turn Lamp Driver 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 455

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 Feb 18, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2874 Dodge Description

The Body Control Module (BCM) receives a communication network message from the Steering Column Control Module (SCCM) requesting turn signal lamp illumination. When this bus message is received, the BCM provides a pulsed voltage output through the rear turn signal control circuit. The rear turn signal control circuit connects to the Turn Signal Lamps. The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) detects a low condition on the Right Rear Turn Lamp Driver circuit.

OBDII Code B2874 Dodge - Right Reverse Lamp 2 Control Circuit Short - AutoCodes.com — B2874 Dodge Code - Right Reverse Lamp 2 Control Circuit Short

What does this mean?

What are the Possible Causes of the DTC B2874 Dodge?

Faulty Right Rear Turn Lamp Driver
Right Rear Turn Lamp Driver harness is open or shorted
Right Rear Turn Lamp Driver circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2874 Dodge?

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 does this mean?

Code Tech Notes

B2874-11 RIGHT REVERSE LAMP 2 CONTROL CIRCUIT SHORT TO GROUND
B2874-15 RIGHT REVERSE LAMP 2 CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2874 Dodge 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.

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Need Help with the Code?

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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 B2874 Dodge Code

1. What does the OBDII code B2874 mean on a Dodge vehicle?

The code B2874 indicates a problem with the Right Reverse Lamp 2 Control Circuit, typically caused by a short to ground or an open circuit.

2. What are the symptoms of the B2874 code?

Common symptoms include the right reverse lamp not working, a dashboard warning light, or a malfunction indicator for the lighting system.

3. What causes the B2874 code to appear?

The code is usually triggered by a short in the wiring, a faulty bulb, a damaged socket, or corrosion in the circuit.

4. Can I drive with the B2874 code active?

Yes, but it is not recommended as the malfunctioning reverse light can reduce visibility and safety when reversing.

5. How do I diagnose the B2874 code?

Start by checking the reverse light bulb, wiring, and socket for damage or corrosion, and use a multimeter to test for continuity in the circuit.

6. What tools are needed to fix the B2874 code?

You may need a multimeter, replacement bulbs, wiring repair tools, and potentially a scan tool to clear the code after repairs.

7. How can I fix the B2874 code?

Repair or replace the damaged wiring, clean corroded connectors, and replace any faulty bulbs or sockets in the right reverse lamp circuit.

8. Will replacing the bulb fix the B2874 code?

Replacing the bulb might fix the issue if the bulb is faulty, but further inspection is needed to rule out wiring or socket problems.

9. How do I prevent the B2874 code from recurring?

Regularly inspect and maintain the reverse light circuit, ensuring there is no moisture, corrosion, or damaged wiring.

10. Do I need a professional mechanic to fix the B2874 code?

If youâ€™re experienced with basic electrical repairs, you may fix it yourself, but consult a professional if the issue involves complex wiring or persistent faults.