What causes a P1402 code?

P1402 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 P1402 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1402 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

P1402

CCV pressure sensor min range fault

What it means

The Engine Control Module (ECM) has detected that the Crankcase Ventilation (CCV) pressure sensor signal is at its minimum voltage limit or indicating an out-of-range low pressure condition.