Code result
C05AB
Brake Blending Separation Valve Performance
High severity
What it means
Brake blending separation valve does not respond as expected — used to isolate hydraulic and regenerative brake circuits on EVs/hybrids.
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
Valve stuck mechanically
highOne of the most commonly reported causes for this code — check this first.
Related help
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