U01BE on Chevrolet
Lost Communication with Drive Motor Disconnect Clutch Actuator
U01BE on Chevrolet vehicles indicates lost communication with drive motor disconnect clutch actuator. Au7o has documented this code across 1 Chevrolet model — most commonly on Corvette. A network communication code set when the controlling module stops receiving valid serial data messages from the M162 drive motor disconnect clutch actuator — the actuator mounted on the side of the front electric drive unit that engages and disengages the drive motor's differential to provide eAWD. GM's diagnosis for the 2024-2025 Corvette E-Ray is an internal microchip malfunction inside the actuator itself, and the published repair is to replace the M162 actuator (P/N 24052771) rather than to chase wiring or reprogram. Typical repair costs on Chevrolet range from $150 to $900, depending on the specific model and root cause.
Common Causes of U01BE
- •Internal microchip failure inside the M162 drive motor disconnect clutch actuator (GM's stated cause)
- •Open, shorted or high-resistance serial data circuit to the actuator
- •Corroded or unseated actuator connector
- •Loss of ignition voltage or ground to the actuator
U01BE on Chevrolet by Model
Chevrolet Corvette(1 issue)
- E-Ray Check Engine Light with Network Communication DTC U01BE2024-2025
GM released Bulletin #24-NA-273, 'Malfunction Indicator Lamp (MIL) Illuminated - DTC U01BE Set,' specifically for the 2024-2025 Corvette E-Ray. U01BE is a serial-data network communication code, and on the E-Ray the hybrid control network carries modules that no other Corvette has (battery energy control module, drive motor control module, front electric drive unit). The bulletin's fitment is limited to the E-Ray, so a shop diagnosing this code on an E-Ray should not fall back on generic C8 network diagnostics.
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View U01BE across all makes →Frequently Asked Questions
What does U01BE mean on Chevrolet?▼
U01BE stands for "Lost Communication with Drive Motor Disconnect Clutch Actuator." A network communication code set when the controlling module stops receiving valid serial data messages from the M162 drive motor disconnect clutch actuator — the actuator mounted on the side of the front electric drive unit that engages and disengages the drive motor's differential to provide eAWD. GM's diagnosis for the 2024-2025 Corvette E-Ray is an internal microchip malfunction inside the actuator itself, and the published repair is to replace the M162 actuator (P/N 24052771) rather than to chase wiring or reprogram. On Chevrolet specifically, this code is documented across 1 model.
What causes U01BE on Chevrolet vehicles?▼
Common causes on Chevrolet: Internal microchip failure inside the M162 drive motor disconnect clutch actuator (GM's stated cause), Open, shorted or high-resistance serial data circuit to the actuator, Corroded or unseated actuator connector, Loss of ignition voltage or ground to the actuator. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U01BE on a Chevrolet?▼
Repair costs on Chevrolet range from $150 to $900, depending on the specific model and root cause.
Which Chevrolet models have U01BE documented?▼
Au7o has documented U01BE on 1 Chevrolet model: Corvette.