Code result
U0293
Lost Communication with Hybrid Vehicle Control System
High severity
What it means
The hybrid vehicle network has lost the hybrid control unit (HCU). The vehicle drops out of hybrid operation, often forced into a fail-safe mode that limits torque.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
HCU unpowered
highOne of the most commonly reported causes for this code — check this first.
HV interlock loop opened
mediumA plausible cause — test and verify before replacing parts.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
Related help
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