What causes a P1024 code?

P1024 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 P1024 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1024 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

P1024

BPV CAN sensor power supply fault

What it means

The ECM has detected an out-of-range voltage or a loss of communication on the power supply circuit dedicated to the Smart Bypass Valve (BPV) sensor via the CAN data link.