B1814 Code - Wiper Rear Motor Down Relay Coil Circuit Failure
Quick Answer
The B1814 code indicates a failure in the circuit of the rear wiper motor down relay coil. Common causes include Faulty rear wiper motor, Damaged wiring or connections in the rear wiper circuit, Defective rear wiper relay. 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
- B1814 indicates Wiper Rear Motor Down Relay Coil Circuit Failure.
- Common causes
- Common causes include Faulty rear wiper motor, Damaged wiring or connections in the rear wiper circuit, Defective rear wiper relay.
- 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 B1814 Description
The B1814 code indicates a failure in the circuit of the rear wiper motor down relay coil. This relay is responsible for controlling the operation of the rear wiper motor, which moves the rear wiper blade on the vehicle. When this circuit fails, it can result in the rear wiper not functioning properly or not moving at all. This can be a safety hazard, especially in adverse weather conditions where visibility is crucial.
Common Causes of B1814
- Faulty rear wiper motor.
- Damaged wiring or connections in the rear wiper circuit.
- Defective rear wiper relay.
- Corrosion or water damage in the rear wiper system.
- Electrical issues in the vehicle's system.
Symptoms of B1814
- Rear wiper not moving or operating erratically.
- Rear wiper not turning off.
- Rear wiper only working on certain speed settings.
- Rear wiper not returning to its proper resting position.
- Rear wiper fuse blowing repeatedly.
How to Fix B1814
- Perform a thorough inspection of the rear wiper motor, wiring, and connections.
- Test the rear wiper relay for proper functionality.
- Replace any damaged wiring or connections in the rear wiper circuit.
- Replace the rear wiper motor if it is found to be faulty.
- Clear any corrosion or water damage in the rear wiper system.
Cost to Fix B1814
The cost of repairing a B1814 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this code could range from $100 to $300, including parts and labor. However, this is just an estimate, and actual costs may differ. It's recommended to consult with a professional mechanic to get a more accurate quote based on your vehicle's make and model.
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Frequently Asked Questions about B1814 Code
1. What does OBDII code B1814 mean?
B1814 indicates a failure in the rear wiper motor down relay coil circuit, meaning the relay responsible for moving the rear wiper to the down position is malfunctioning.
2. What are the common symptoms of code B1814?
Symptoms include the rear wiper not parking in the down position, wiper movement being erratic or stuck, or no response from the rear wiper at all.
3. What causes the B1814 code to appear?
Common causes include a faulty rear wiper motor, damaged relay, corroded or broken wiring, or a poor electrical connection in the circuit.
4. Can I still drive my vehicle with the B1814 code?
Yes, the code does not affect drivability, but it may limit rear visibility during adverse weather conditions, which can be a safety concern.
5. How can I diagnose code B1814?
Start by inspecting the rear wiper motor, relay, and associated wiring for damage or corrosion. Use a multimeter to test for continuity and proper voltage in the circuit.
6. How do I fix the B1814 code?
Repairs may involve replacing the faulty rear wiper relay, fixing damaged wiring, cleaning corroded connectors, or replacing the rear wiper motor if necessary.
7. How much does it cost to fix the B1814 code?
Repair costs can vary, typically ranging from $50 to $150 for a relay replacement, and up to $300 or more if the rear wiper motor needs replacing.
8. Can a blown fuse cause the B1814 code?
Yes, a blown fuse in the rear wiper circuit can disrupt power and trigger the code, so the fuses should be checked during diagnosis.
9. Will clearing the B1814 code with a scanner fix the issue?
Clearing the code may temporarily turn off the warning, but the underlying issue must be resolved to prevent the code from returning.
10. Can I repair the B1814 issue myself?
If you have basic auto repair skills and tools, you can inspect and replace the relay or wiring. For complex issues like motor replacement, professional help is recommended.
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