U128C
Lost Communication With The Wiper Control Unit
U128C is an OBD-II diagnostic trouble code meaning: Lost Communication With The Wiper Control Unit. Common causes: open or short circuit in the module power supply circuit, damage to the wiring harness between the ecu and the module. Estimated repair cost: $33–167.
Symptoms
- The wipers don't work
- The wipers do not work correctly (for example, they turn on randomly)
- Error message on the dashboard
- Inability to activate different wiper modes
- Intermittent wiper operation
Causes
- Open or short circuit in the module power supply circuit
- Damage to the wiring harness between the ECU and the module
- Malfunction of the wiper control module
- Problems with connectors (oxidation, poor contact)
- Software error in the ECU
How to Fix
- Check fuses associated with the wiper system
- Inspect connectors and wires for damage
- Check power and ground on the control module
- Scan the module for additional errors
- If necessary, replace the wiper control module
Related codes
FAQ
What does the U128C code mean?
U128C is an OBD-II diagnostic trouble code that indicates: Lost Communication With The Wiper Control Unit
What causes a U128C error code?
The most common causes of U128C include: Open or short circuit in the module power supply circuit; Damage to the wiring harness between the ECU and the module; Malfunction of the wiper control module; Problems with connectors (oxidation, poor contact).
How do I fix a U128C diagnostic trouble code?
To fix U128C: Check fuses associated with the wiper system. Inspect connectors and wires for damage. Check power and ground on the control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U128C?
Limited driving only, diagnose soon
How much does it cost to fix U128C?
The estimated repair cost for U128C is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat