B2390 Dodge Code - Mist Switch Circuit Low
Quick Answer
The Cluster monitors the Mist Switch Circuit. Common causes include Faulty Multifunction Switch, Multifunction Switch harness is open or shorted, Multifunction 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
- B2390 Dodge indicates Mist Switch Circuit Low.
- Common causes
- Common causes include Faulty Multifunction Switch, Multifunction Switch harness is open or shorted, Multifunction 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.
Code B2390 Dodge Description
What are the Possible Causes of the DTC B2390 Dodge?
- Faulty Multifunction Switch
- Multifunction Switch harness is open or shorted
- Multifunction Switch circuit poor electrical connection
- Faulty Cluster
How to Fix the DTC B2390 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2390 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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Frequently Asked Questions about B2390 Dodge Code
1. What does the OBDII code B2390 mean on a Dodge vehicle?
The B2390 code indicates a "Mist Switch Circuit Low" fault, meaning the wiper mist switch circuit is showing low voltage or an electrical issue.
2. What are common symptoms of the B2390 code?
Symptoms include the wipers not functioning properly in mist mode, intermittent wiper operation failure, or dashboard warning lights related to the body control module.
3. What causes the B2390 Mist Switch Circuit Low code?
Common causes include a faulty mist switch, damaged wiring, corroded connectors, or issues with the body control module (BCM).
4. How can I troubleshoot the B2390 code on my Dodge?
Inspect the mist switch and its wiring for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.
5. Can a faulty mist switch trigger the B2390 code?
Yes, a defective mist switch is a primary cause of this code and should be tested or replaced if necessary.
6. Is driving with the B2390 code safe?
While it’s generally safe to drive, limited or malfunctioning windshield wipers can become a safety hazard in poor weather conditions.
7. How do I fix the B2390 code?
Repairs may include replacing the mist switch, repairing damaged wiring, cleaning corroded connectors, or reprogramming the BCM if needed.
8. How much does it cost to repair the B2390 Mist Switch Circuit Low code?
Costs vary, but a mist switch replacement typically ranges from $50 to $150, while BCM repairs or reprogramming may cost more.
9. Can a dead battery cause the B2390 code?
A weak or dead battery can sometimes cause electrical issues, but it's not a common cause of this specific code.
10. Do I need a professional mechanic to fix the B2390 code?
If you're comfortable with electrical diagnostics, you can attempt the repair yourself. Otherwise, a professional mechanic is recommended for BCM-related issues.
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