U0293: Lost Communication With Hybrid Powertrain Control Module
3 vehicles · 2 makes · $100-$500 repair
Most Reported On
U0293 is an OBD-II diagnostic trouble code meaning “Lost Communication With Hybrid Powertrain Control Module.” A controller is no longer receiving the periodic data-bus messages expected from the Hybrid (HEV/EV) Powertrain Control Module, the supervisory controller coordinating engine, motor(s), and high-voltage battery. Set after a calibrated timeout, it indicates lost communication with that module. This code is most commonly reported on 2021-2025 Toyota Venza, 2022-2023 Mercedes-Benz EQS (EQS 450+, EQS 450 4MATIC, EQS 580 4MATIC, AMG EQS 53), and 2016-2017 Toyota Camry, with repair costs ranging from $100 to $500.
Common Causes
Typical Repair Cost
Based on 3 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
This is a network/communication code. A basic engine-code reader will not show it — you need a scanner that reads all modules. These read U0293.
One caveat that applies to every scanner: only powertrain codes are standardised across manufacturers. Body, chassis and network coverage is "enhanced" diagnostics, and how deep it goes varies by make and model year — check your specific vehicle against the tool's coverage list before buying.
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level tablet with all-system coverage and bi-directional control, so you can command a module rather than only read it.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
What you can do yourself, and what needs a shop
Reading the code, clearing it, and watching whether it returns is a driveway job with the right scanner. These steps are not:
- Module programming or software updates — needs the manufacturer software or a J2534 pass-through with a paid subscription.
- Replacing a control module — most are VIN-programmed and immobilizer-registered, so a new one does nothing until it is coded to your car.
- Airbag/SRS component work — a stored fault can deploy a live device.
If the vehicle is still under warranty, check for an open recall or technical service bulletin before buying anything — the repair may already be covered.
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Vehicles Affected (3)
FAQ
What does U0293 mean?
U0293 stands for "Lost Communication With Hybrid Powertrain Control Module." A controller is no longer receiving the periodic data-bus messages expected from the Hybrid (HEV/EV) Powertrain Control Module, the supervisory controller coordinating engine, motor(s), and high-voltage battery. Set after a calibrated timeout, it indicates lost communication with that module.
What are the most common causes of U0293?
The most common causes of U0293 are: Power/ground or HV-control supply loss to the hybrid powertrain module, Open/shorted bus wiring, Corroded/loose connectors, Failed hybrid powertrain control module, Network/gateway fault. The specific cause varies by vehicle.
How much does it cost to fix U0293?
Repair costs for U0293 range from $100 to $500, depending on the vehicle and root cause.
Which vehicles are affected by U0293?
Au7o has documented U0293 across 3 vehicle models from 2 manufacturers: Mercedes-Benz, Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.