AutoCodes – Chrysler – B2873 Chrysler

B2873 Chrysler Code - Left 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 Left Rear Turn Lamp Driver, Left Rear Turn Lamp Driver harness is open or shorted, Left 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: B2873 Chrysler indicates Left Reverse Lamp 2 Control Circuit Short.
Common causes: Common causes include Faulty Left Rear Turn Lamp Driver, Left Rear Turn Lamp Driver harness is open or shorted, Left 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 539

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 B2873 Chrysler 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 or high condition on the Left Rear Turn Lamp Driver circuit.

OBDII Code B2873 Chrysler - Left Reverse Lamp 2 Control Circuit Short - AutoCodes.com — B2873 Chrysler Code - Left Reverse Lamp 2 Control Circuit Short

What does this mean?

What are the Possible Causes of the DTC B2873 Chrysler?

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

How to Fix the DTC B2873 Chrysler?

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

B2873-11 LEFT REVERSE LAMP 2 CONTROL CIRCUIT SHORT TO GROUND
B2873-15 LEFT REVERSE LAMP 2 CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2873 Chrysler 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 B2873 Chrysler Code

1. What does the OBDII code B2873 mean on a Chrysler vehicle?

The B2873 code indicates a problem with the Left Reverse Lamp 2 Control Circuit, specifically a short circuit issue.

2. What are the common symptoms of the B2873 code?

Typical symptoms include the left reverse lamp not working, illuminated warning lights on the dashboard, and potential issues with other connected lights.

3. What causes the B2873 code to appear?

Common causes include damaged wiring, corroded connectors, a faulty reverse lamp bulb, or a short circuit in the control module.

4. Can a blown fuse trigger the B2873 code?

Yes, a blown fuse related to the reverse lamp circuit can cause this code to appear.

5. How do I diagnose the B2873 code?

Start by inspecting the reverse lamp bulb, wiring, and connectors for damage or corrosion. Use a multimeter to check for continuity and shorts in the circuit.

6. Can I still drive with the B2873 code active?

Yes, you can drive, but the left reverse lamp will not function, reducing visibility and safety when reversing.

7. How do I fix the B2873 code on my Chrysler?

Repairs may include replacing a faulty bulb, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.

8. Could a faulty Body Control Module (BCM) cause the B2873 code?

Yes, though rare, a malfunctioning BCM could cause issues with the reverse lamp circuit.

9. How much does it cost to fix the B2873 code?

The cost depends on the issue, such as replacing a bulb ($10-$20) or fixing wiring and connectors (up to $150). BCM replacement could cost significantly more.

10. Will clearing the B2873 code fix the issue permanently?

No, clearing the code without addressing the root cause will likely result in the code returning. Proper diagnosis and repair are necessary.