U0293 on Mercedes-Benz: How to Diagnose & Fix
Lost Communication With Hybrid Powertrain Control Module
1 Mercedes-Benz model · 1 documented issue · 1 critical
U0293 on Mercedes-Benz by model: symptoms, diagnosis and fix
NHTSA recall 23V405 covers certain 2022-2023 EQS 450, EQS 580 and AMG EQS vehicles. A development-process deviation could make the electric-drivetrain fault-management software respond improperly to a detected fault at a specific electric-drive plug connector, deactivate the drivetrain and cause loss of propulsion. Multiple warning messages appear when the event occurs.
Common Symptoms
- VIN recall eligibility checked
- drivetrain warnings documented
- loss-of-propulsion event handled as a safety concern
How to Fix
Check the VIN for NHTSA recall 23V405 / Mercedes campaign 2023060009 and have an authorized Mercedes-Benz dealer install the free electric-drivetrain software update if open. If propulsion is lost or drivetrain warnings appear, move to a safe location when possible and arrange qualified diagnosis. Do not buy an electric drive unit, connector or control module from this page; recall eligibility and the remedy are VIN-specific.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
U0293 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U0293 mean on a Mercedes-Benz?
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. On Mercedes-Benz it is documented across 1 model: EQS.
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 on a Mercedes-Benz?
Repair costs vary widely with the root cause and Mercedes-Benz model; each issue on this page carries its own estimate where one is published.
Looking for U0293 on a different make?
View U0293 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.