U0293

Lost Communication With Hybrid/EV Powertrain Control Module

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
The car goes into emergency mode
Reduced engine power
Disabling hybrid features
Problems with charging a high-voltage battery

Causes

Open or short circuit in the CAN bus
Malfunction of the hybrid transmission control module
Module power problems
Corroded or damaged connectors
Software error in the control unit

How to Fix

Check the integrity of the CAN bus and wiring
Diagnose control module power supply
Inspect and clean all connectors
Scan all modules for errors
Update control unit software
Repair only from an authorized dealer

Related codes

U0294 U0295 U0296