B1640 Dodge Code - Front Right Turn Control Circuit High
Quick Answer
The B1640 diagnostic trouble code for Dodge vehicles indicates a fault in the front right turn control circuit, specifically detecting a high voltage signal. Common causes include Faulty turn signal control module, Damaged wiring or connectors in the front right turn circuit, Corrosion in the electrical connections. 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
- B1640 Dodge indicates Front Right Turn Control Circuit High.
- Common causes
- Common causes include Faulty turn signal control module, Damaged wiring or connectors in the front right turn circuit, Corrosion in the electrical connections.
- 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 B1640 Dodge Description
The B1640 diagnostic trouble code for Dodge vehicles indicates a fault in the front right turn control circuit, specifically detecting a high voltage signal. This code typically means that there is an issue with the electrical circuit that controls the front right turn signal on the vehicle. The turn signal control module monitors the voltage levels in the circuit, and if it detects a higher voltage than expected, it triggers the B1640 code.
Common Causes of B1640 Dodge
- Faulty turn signal control module
- Damaged wiring or connectors in the front right turn circuit
- Corrosion in the electrical connections
- Short circuit in the turn signal system
- Faulty front right turn signal bulb
Symptoms of B1640 Dodge
- Front right turn signal not working or flashing erratically
- Dashboard indicator for turn signal flashing rapidly
- Turn signal staying on without blinking
- Turn signal not turning off after completing a turn
How to Fix B1640 Dodge
- Begin by visually inspecting the front right turn signal bulb to ensure it is not burnt out or damaged. Replace the bulb if necessary.
- Check the wiring and connectors in the front right turn signal circuit for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components.
- Test the turn signal control module for proper operation and replace it if it is found to be faulty.
- Clear the diagnostic trouble code from the vehicle's system using an OBD-II scanner.
- Test the front right turn signal to ensure it is functioning correctly after the repair.
Cost to Fix B1640 Dodge
The cost of repairing the B1640 code for a Dodge vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $100 to $300 for parts and labor to address this problem. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate based on location, vehicle make and model, and engine type. It is recommended to obtain quotes from multiple shops to ensure you are getting a fair price for the repair.
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Frequently Asked Questions about B1640 Dodge Code
1. What does the OBDII code B1640 mean on a Dodge vehicle?
B1640 indicates a problem with the Front Right Turn Control Circuit, specifically that the circuit voltage is higher than expected.
2. What are the common symptoms of a B1640 code?
Symptoms include the front right turn signal not working, flickering, or staying on constantly, and possibly a "Turn Signal Out" warning on the dashboard.
3. What causes the B1640 code to appear?
Common causes include a faulty turn signal bulb, damaged wiring or connectors, a malfunctioning turn signal switch, or a defective body control module (BCM).
4. Can a blown bulb cause the B1640 code?
Yes, a burned-out bulb or incorrect bulb type in the front right turn signal can trigger the B1640 code.
5. How do I diagnose the B1640 code?
Start by inspecting the front right turn signal bulb and socket, then check the wiring and connectors for damage, and test the turn signal switch and BCM if needed.
6. Can I still drive with a B1640 code?
While the vehicle may still be drivable, the front right turn signal not functioning properly is a safety issue and should be addressed as soon as possible.
7. How do I fix the B1640 code on a Dodge?
Replace the faulty turn signal bulb, repair or replace damaged wiring, and, if necessary, replace the turn signal switch or reprogram/replace the BCM.
8. Will clearing the code fix the B1640 issue?
Clearing the code without addressing the underlying problem will only be a temporary solution, and the code is likely to return.
9. How much does it cost to fix a B1640 code?
The cost depends on the root cause, ranging from a few dollars for a bulb replacement to higher costs for wiring repairs or BCM replacement.
10. Can a bad BCM cause the B1640 code?
Yes, a malfunctioning BCM can incorrectly detect high voltage in the turn control circuit and trigger the code.
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