B2873 Dodge Code - Left Reverse Lamp 2 Control Circuit Short
Quick Answer
The B2873 diagnostic trouble code (DTC) indicates a fault in the Left Reverse Lamp 2 Control Circuit, specifically a short circuit condition. Common causes include Damaged wiring or insulation in the reverse lamp circuit, leading to a short, Corroded or loose electrical connectors affecting the circuit integrity, Faulty reverse lamp switch that fails to properly control the circuit. 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 Dodge indicates Left Reverse Lamp 2 Control Circuit Short.
- Common causes
- Common causes include Damaged wiring or insulation in the reverse lamp circuit, leading to a short, Corroded or loose electrical connectors affecting the circuit integrity, Faulty reverse lamp switch that fails to properly control the circuit.
- 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 B2873 Dodge Description
The B2873 diagnostic trouble code (DTC) indicates a fault in the Left Reverse Lamp 2 Control Circuit, specifically a short circuit condition. This code is primarily associated with vehicles equipped with a reverse lamp system that utilizes multiple circuits to control the operation of reverse lamps. When the vehicle is put into reverse, the reverse lamps are activated to illuminate the area behind the vehicle, enhancing visibility and safety.
Common Causes of B2873 Dodge
- Damaged wiring or insulation in the reverse lamp circuit, leading to a short.
- Corroded or loose electrical connectors affecting the circuit integrity.
- Faulty reverse lamp switch that fails to properly control the circuit.
- Water intrusion or moisture buildup in the reverse lamp housing or connectors.
- Aftermarket modifications or repairs that have altered the original wiring configuration.
Symptoms of B2873 Dodge
- Left reverse lamp does not illuminate when the vehicle is in reverse.
- Left reverse lamp remains illuminated even when the vehicle is not in reverse.
- Blown fuses related to the reverse lamp circuit.
- Malfunctioning reverse sensing system (if equipped), with false alerts or failure to detect obstacles.
- Battery drainage issues due to continuous power draw from the reverse lamp.
How to Fix B2873 Dodge
- Visual Inspection: Begin with a thorough visual inspection of the wiring harness, connectors, and the reverse lamp assembly for any signs of damage, corrosion, or loose connections.
- Check for Shorts: Use a multimeter to test for continuity in the reverse lamp circuit and identify any shorts to ground or other circuits.
- Replace Faulty Components: If damaged wiring or connectors are found, repair or replace them as necessary. If the reverse lamp switch is faulty, it should also be replaced.
- Test the System: After repairs, test the reverse lamp operation by putting the vehicle in reverse and ensuring that the left reverse lamp illuminates correctly without any issues.
- Clear Codes and Monitor: Clear the diagnostic trouble codes from the vehicle's computer and monitor for any reoccurrence of the B2873 code or related symptoms.
Cost to Fix B2873 Dodge
The typical repair costs for addressing the B2873 code can vary widely depending on the specific issue identified. Basic repairs, such as replacing a faulty switch or repairing wiring, may range from $100 to $300. More extensive repairs involving complete wiring harness replacements or significant electrical work could cost between $300 and $600 or more.
Tech Notes for B2873 Dodge
B2873-15 LEFT REVERSE LAMP 2 CONTROL CIRCUIT SHORT TO BATTERY OR OPEN
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Frequently Asked Questions about B2873 Dodge Code
1. What does the OBDII code B2873 mean on a Dodge vehicle?
The B2873 code indicates a problem with the Left Reverse Lamp 2 Control Circuit, usually due to a short or electrical fault in the circuit.
2. What are the common symptoms of the B2873 code?
Symptoms include the left reverse light not functioning, a warning light on the dashboard, or intermittent operation of the reverse light.
3. What causes the B2873 code to appear?
The code is typically caused by a short circuit, damaged wiring, a faulty reverse lamp bulb, or a malfunctioning control module.
4. Can a blown bulb trigger the B2873 code?
Yes, a blown or faulty reverse lamp bulb can cause this code if it disrupts the electrical circuit.
5. How can I diagnose the B2873 code?
Start by inspecting the left reverse lamp, testing the bulb, and checking the wiring and connectors for damage or corrosion. Use a multimeter to check for continuity and shorts in the circuit.
6. Is it safe to drive with the B2873 code active?
Yes, but it’s important to address the issue promptly as the reverse lamp is a safety feature for visibility when reversing.
7. How do I fix the B2873 code?
Repairs may involve replacing a damaged bulb, repairing or replacing faulty wiring, cleaning corroded connectors, or addressing issues with the control module.
8. Can a faulty control module cause the B2873 code?
Yes, a malfunctioning body control module (BCM) could fail to properly control the left reverse lamp circuit, triggering the code.
9. How much does it cost to repair the B2873 code?
Repair costs depend on the issue, ranging from $10-$20 for a bulb replacement to $100-$500 for wiring repairs or module replacement.
10. Can clearing the code with a scan tool fix the problem?
Clearing the code will not fix the underlying issue. The root cause of the short or fault must be addressed to prevent the code from returning.
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