Code result
P25F3
Turbocharger/Supercharger Boost Sensor C Circuit Range/Performance
Moderate severity
What it means
The third boost pressure sensor reading is implausible compared with manifold pressure or commanded boost. Either drift, leak in the sensing line, or contamination on the sensor diaphragm.
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
Sensor drift after thermal aging
mediumA plausible cause — test and verify before replacing parts.
Sensing hose blocked by oil residue
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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