U059C code meaning
Invalid Data Received From Drive Motor Control Module C
What U059C means
A third drive motor controller exists only on tri-motor or quad-motor vehicles, where one axle carries two motors for torque vectoring. Examples are GMC's Hummer EV in tri-motor form and Rivian's quad-motor R1T with a motor at each wheel. U059C is stored when module C still talks but sends torque, speed or status values the vehicle controller cannot accept. Which wheel or axle module C serves is left to the maker, and none documents U059C publicly. The sibling logic is the same as for module B, which Audi treats as the rear drive unit on the e-tron and GM monitors with counter and authentication checks; for C the vehicle usually disables the motor and continues with reduced power and without torque vectoring on that axle.
U059C at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U059C
- Propulsion system warning and reduced power
- Torque vectoring or a drive mode unavailable
Common causes of U059C
- PossibleInverter or controller of motor C faulty
- PossibleLow-voltage harness or connector at drive unit C damaged
- PossibleSoftware level of motor C not matching the vehicle controller
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor module c
What each part of U059C means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 9C | The exact fault in that area. |
What to do next
- Note U059C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U059C
What does U059C mean?
U059C means "Invalid Data Received From Drive Motor Control Module C". A third drive motor controller exists only on tri-motor or quad-motor vehicles, where one axle carries two motors for torque vectoring. It is a generic code, so it means the same on every make.
Is it safe to drive with U059C?
Drive gently and only to a workshop. With U059C the car can go into limp mode (reduced power) to protect itself.
Will U059C fail an emissions test?
U059C is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U059C to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will U059C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.