Code result
P25F8
Turbocharger/Supercharger Bypass Valve C Control Circuit
Moderate severity
What it means
A third bypass (recirculation or wastegate) valve used in three-stage charging systems is not responding to control commands. Boost balancing across stages can no longer be achieved.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open solenoid coil
highOne of the most commonly reported causes for this code — check this first.
Open or shorted wiring to the valve
mediumA plausible cause — test and verify before replacing parts.
Related help
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