Code result
P252A
Engine Oil Quality Sensor Circuit
Moderate severity
What it means
General electrical fault on the engine oil quality sensor — typically a capacitive/dielectric sensor that estimates oil aging from permittivity, viscosity proxies and conductivity. With no valid reading the dynamic service-interval algorithm falls back to the fixed-interval default.
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 or shorted wiring to the sensor
highOne of the most commonly reported causes for this code — check this first.
Failed sensor electrode after long use
mediumA plausible cause — test and verify before replacing parts.
Related help
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