What causes a P153C code?

P153C can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P153C code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P153C active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

OBD-II

P153C

Crankcase Oil Mist Separator rotor overspeed

What it means

Engine Crankcase Oil Mist Separator rotor speed is higher than the programmed threshold, indicating the centrifugal separator is spinning too fast or the sensor is providing inaccurate data.