B1478 Code - Power Window One Touch Up/Down Activated Simultaneously
Quick Answer
The Body Control Module (BCM) monitors the Power Window One Touch Up/Down Switch. Common causes include Faulty Power Window One Touch Up/Down Switch, Power Window One Touch Up/Down Switch harness is open or shorted, Power Window One Touch Up/Down 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
- B1478 indicates Power Window One Touch Up/Down Activated Simultaneously.
- Common causes
- Common causes include Faulty Power Window One Touch Up/Down Switch, Power Window One Touch Up/Down Switch harness is open or shorted, Power Window One Touch Up/Down 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 B1478 Description
What are the Possible Causes of the DTC B1478?
- Faulty Power Window One Touch Up/Down Switch
- Power Window One Touch Up/Down Switch harness is open or shorted
- Power Window One Touch Up/Down Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1478?
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 B1478 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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Need Help with the Code?
Get the B1478 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1478 Chrysler — Channel 5 Audio Speaker Output Circuit Shorted Together
- B1478 Dodge — Channel 5 Audio Speaker Output Circuit Shorted Together
- B1478 Hyundai — Passenger Curtain Airbag Resistance Too Low
- B1478 Jeep — Channel 5 Audio Speaker Output Circuit Shorted Together
- B1478 KIA — Passenger Curtain Airbag Resistance Too Low
- B1478 RAM — Channel 5 Audio Speaker Output Circuit Shorted Together
Frequently Asked Questions about B1478 Code
1. What are the common symptoms of OBDII code B1478 related to Power Window One Touch Up/Down activated simultaneously?
The common symptoms include both power windows moving up or down simultaneously with a single press of the switch, erratic window operation, or the windows failing to respond to the switch.
2. What could cause the OBDII code B1478 to trigger in a vehicle?
This code is typically triggered by a malfunction in the power window control module, faulty wiring, a short circuit in the system, or a problem with the power window switch.
3. How can I diagnose the issue causing OBDII code B1478 in my vehicle?
You can start by inspecting the power window switches, checking the wiring for any visible damage, and testing the power window control module using a diagnostic tool to pinpoint the exact cause of the issue.
4. Is it safe to continue driving with OBDII code B1478 active in my vehicle?
While the code itself may not affect the drivability of the vehicle, it is recommended to address the power window issue promptly to ensure the safety and convenience of all occupants.
5. Can I repair the OBDII code B1478 issue myself, or do I need professional assistance?
Depending on your automotive repair skills and knowledge, you may be able to troubleshoot and repair the issue yourself by following a repair manual or tutorial. However, if you are unsure or inexperienced, seeking professional assistance is advisable.
6. Are there any temporary fixes I can try for OBDII code B1478 before taking my vehicle to a mechanic?
You can try resetting the power window system by disconnecting the car battery for a few minutes and reconnecting it. If the issue persists, it is best to have the problem properly diagnosed and repaired.
7. Will fixing OBDII code B1478 require replacing the entire power window system?
Not necessarily. In many cases, the issue can be resolved by repairing or replacing the faulty component causing the problem, such as the power window control module, wiring, or switch.
8. How much should I expect to pay for repairing OBDII code B1478 in my vehicle?
The cost of repair can vary depending on the cause of the issue, the extent of the damage, and the labor rates in your area. It is recommended to obtain quotes from different mechanics or repair shops for an accurate estimate.
9. Can extreme weather conditions contribute to triggering OBDII code B1478 in a vehicle?
Yes, extreme temperatures or moisture exposure can sometimes lead to electrical issues in the power window system, which may trigger the code B1478. Taking preventive measures such as keeping the vehicle sheltered can help prevent such issues.
10. How long does it typically take to repair OBDII code B1478 in a vehicle?
The repair time can vary based on the complexity of the issue and the availability of replacement parts. Simple fixes may take a few hours, while more involved repairs could extend the repair time to a day or more.
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