B1402 Code - Driver Power Window Down Switch Circuit Failure
Quick Answer
The B1402 diagnostic trouble code (DTC) indicates a failure in the driver power window down switch circuit. Common causes include Faulty power window switch, Wiring issues such as short circuits or open circuits, Malfunctioning window motor. 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
- B1402 indicates Driver Power Window Down Switch Circuit Failure.
- Common causes
- Common causes include Faulty power window switch, Wiring issues such as short circuits or open circuits, Malfunctioning window motor.
- 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 B1402 Description
The B1402 diagnostic trouble code (DTC) indicates a failure in the driver power window down switch circuit. This means that there is an issue with the electrical system that controls the driver's side power window going down. The power window switch sends a signal to the window motor to lower the window, and if this circuit fails, the window may not operate as intended.
Common Causes of B1402
- Faulty power window switch.
- Wiring issues such as short circuits or open circuits.
- Malfunctioning window motor.
- Blown fuse related to the power window circuit.
- Corrosion or damage to electrical connectors in the circuit.
Symptoms of B1402
- Inability to lower the driver's side power window.
- Unresponsive or intermittent operation of the power window switch.
- Abnormal noises coming from the window motor when attempting to lower the window.
- The power window moves slowly or jerks when trying to lower it.
- The window may get stuck in the up position.
How to Fix B1402
- Begin by inspecting the power window switch and wiring for any visible damage or loose connections. Replace the switch if necessary.
- Test the window motor to determine if it is functioning properly. Replace the motor if it is defective.
- Check and replace any blown fuses related to the power window circuit.
- Inspect and repair any damaged wiring or connectors in the circuit.
- Test the power window system to ensure proper operation after completing the repairs.
Cost to Fix B1402
The cost of repairing a driver power window down switch circuit failure can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair cost can range from $100 to $300, including parts and labor. Keep in mind that prices may differ based on the make and model of your vehicle, so it's advisable to get quotes from local auto repair shops for a more accurate estimate.
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Code B1402 Information for Specific Makes
- B1402 Ford — Driver Power Window Down Switch Circuit Failure
- B1402 Lincoln — Driver Power Window Down Switch Circuit Failure
- B1402 Mercury — Driver Power Window Down Switch Circuit Failure
- B1402 Scion — Immobiliser Key Check NG
- B1402 Toyota — Immobiliser Key Check NG
Frequently Asked Questions about B1402 Code
1. What are the common symptoms of OBDII code B1402 (Driver Power Window Down Switch Circuit Failure)?
The common symptoms include the driver power window being inoperable or not responding to switch commands.
2. What are some possible causes of OBDII code B1402?
Potential causes may include a faulty power window switch, damaged wiring or connectors in the circuit, or a malfunctioning power window control module.
3. How can I diagnose the issue related to OBDII code B1402?
You can use a diagnostic scanner to retrieve the trouble code, inspect the power window switch and wiring for any visible damage, and perform continuity tests to pinpoint the faulty component.
4. Can I repair OBDII code B1402 on my own?
If you have experience with automotive electrical systems, you may attempt to repair the issue by replacing the faulty power window switch, repairing damaged wiring, or resetting the power window control module.
5. Is it safe to continue driving with OBDII code B1402 active?
While it may be possible to drive with this issue, it is recommended to address the problem promptly to avoid potential inconvenience or safety concerns associated with a malfunctioning power window.
6. Will resetting the OBDII code B1402 resolve the problem?
Resetting the code may temporarily clear the error, but if the underlying issue such as a faulty switch or wiring is not addressed, the problem is likely to reoccur.
7. How much does it typically cost to repair OBDII code B1402 at a repair shop?
The cost of repair can vary depending on the specific cause of the issue, but it may involve diagnostic fees, replacement parts, and labor costs, which can range from $100 to $300 or more.
8. Can extreme weather conditions contribute to triggering OBDII code B1402?
Yes, extreme heat or moisture can potentially cause electrical components to malfunction, leading to issues with the driver power window switch circuit.
9. Is there a way to prevent OBDII code B1402 from occurring in the future?
Regularly inspecting and maintaining the power window system, avoiding excessive force when operating the window switch, and addressing any issues promptly can help prevent the recurrence of this trouble code.
10. Are there any recalls related to OBDII code B1402 for specific vehicle models?
Recalls related to this specific code may vary depending on the vehicle manufacturer and model, so it is advisable to check with the manufacturer or a trusted automotive service center for any relevant recalls.
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