U0117
Lost Communication with Drive Motor Control Module 2
The Drive Motor Control Module 2 has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The second drive-motor controller is silent, limiting electric drive on that axle. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
The Drive Motor Control Module 2 has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The second drive-motor controller is silent, limiting electric drive on that axle. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
Common causes
- high
Secondary drive motor module unpowered
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-3850
- medium
CAN wiring to secondary drive motor broken
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-3850
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for U0117.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for U0117.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for U0117.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does U0117 mean?
U0117 means "Lost Communication with Drive Motor Control Module 2". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0117?
secondary drive motor module unpowered; can wiring to secondary drive motor broken; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full U0117 diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.