U128C Code - Lost Communication With The Wiper Control Unit
Quick Answer
The U128C diagnostic trouble code (DTC) indicates that there is a communication problem between the vehicle's onboard computer system and the wiper control unit. Common causes include Faulty wiring connections, Defective wiper control unit, Malfunctioning main computer module. 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
- U128C indicates Lost Communication With The Wiper Control Unit.
- Common causes
- Common causes include Faulty wiring connections, Defective wiper control unit, Malfunctioning main computer module.
- 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 U128C Description
The U128C diagnostic trouble code (DTC) indicates that there is a communication problem between the vehicle's onboard computer system and the wiper control unit. The wiper control unit is responsible for managing the operation of the windshield wipers, including speed control, intermittent operation, and automatic functions. When communication is lost between the control unit and the main computer, it can lead to a range of issues affecting the performance of the wipers.
Common Causes of U128C
- Faulty wiring connections.
- Defective wiper control unit.
- Malfunctioning main computer module.
- Software glitch in the communication network.
- Water damage or corrosion in the wiper control unit.
Symptoms of U128C
- Wipers operating at a single speed.
- Wipers not responding to control inputs.
- Erratic wiper behavior.
- Wipers stopping mid-operation.
- Related safety systems malfunctioning (e.g., rain-sensing features, automatic headlights).
How to Fix U128C
- Perform a thorough inspection of the wiring harness and connectors for any signs of damage or corrosion.
- Test the wiper control unit and main computer module for proper functionality using a diagnostic scanner.
- Check for any software updates or reprogramming required for the communication network.
- Replace the wiper control unit if it is found to be faulty.
- Clear the DTC and reset the system to ensure proper communication between the control unit and the main computer.
Cost to Fix U128C
The typical repair costs for addressing a lost communication issue with the wiper control unit can vary depending on the specific cause of the problem. On average, the parts cost for a new wiper control unit can range from $150 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost for this issue may range from $250 to $500. It's important to note that these estimates are approximate and can vary based on factors such as location, vehicle make and model, and the specific diagnosis and labor rates at auto repair shops. It's advisable to consult with a qualified technician for a more accurate cost estimate tailored to your vehicle's needs.
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Code U128C Information for Specific Makes
- U128C Acura — Lost Communication With The Wiper Control Unit
- U128C Honda — Lost Communication With The Wiper Control Unit
Frequently Asked Questions about U128C Code
1. What are the common symptoms of OBDII code U128C (Lost Communication With The Wiper Control Unit)?
- Common symptoms include inoperative wipers, erratic wiper movement, wipers not returning to the park position, and potential loss of other related functions.
2. What are the possible causes of OBDII code U128C?
- The code U128C can be caused by issues such as a faulty wiper control unit, damaged wiring or connectors in the wiper system, a blown fuse, or a malfunctioning body control module.
3. How can I diagnose the reason behind OBDII code U128C?
- To diagnose the issue, you can start by checking the wiper fuse, inspecting the wiring and connectors for damage, testing the wiper control unit for functionality, and scanning the vehicle's computer for any related trouble codes.
4. Can a DIY enthusiast repair OBDII code U128C at home?
- Depending on the cause, some DIY repairs may be possible, such as replacing a blown fuse or fixing a loose connector. However, diagnosing and repairing complex issues like a faulty control unit may require professional assistance.
5. Is it safe to drive with OBDII code U128C active?
- While the code itself may not affect the drivability of the vehicle, it is not recommended to drive with malfunctioning wipers as it can compromise visibility during adverse weather conditions, posing a safety risk.
6. How much does it typically cost to repair OBDII code U128C?
- The cost of repairing OBDII code U128C can vary widely depending on the underlying cause. Simple fixes like replacing a fuse may cost less than $50, but more complex issues like replacing a control unit can cost several hundred dollars.
7. Can resetting the OBDII code U128C by clearing the fault codes fix the issue?
- Clearing the fault codes may temporarily reset the warning light, but if the underlying problem persists, the code is likely to reappear. It's essential to diagnose and address the root cause of the communication error.
8. Are there any preventative measures to avoid OBDII code U128C in the future?
- Regularly checking the wiper system for any signs of wear or damage, ensuring proper maintenance of the electrical components, and addressing any issues promptly can help prevent the recurrence of code U128C.
9. Can extreme weather conditions contribute to triggering OBDII code U128C?
- Yes, extreme weather conditions like heavy rain, snow, or ice accumulation can potentially affect the wiper control unit's operation and lead to a loss of communication, triggering the U128C trouble code.
10. How long does it typically take to diagnose and repair OBDII code U128C?
- The time required to diagnose and repair code U128C can vary based on the complexity of the issue. Simple fixes may take less than an hour, while more involved repairs could require several hours or even a day at a repair shop.
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