What causes a P1560 code?

P1560 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 P1560 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1560 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

P1560

Coolant level low warning

What it means

The Engine Control Module (ECM) has detected that the coolant level in the expansion tank has dropped below the minimum required threshold for safe operation.