What causes a P0515 code?

P0515 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 P0515 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0515 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

P0515

P0515 Battery Temperature Sensor Circuit Malfunction

What it means

The engine control module (ECM) detects an electrical signal fault, such as an open circuit or short, from the battery temperature sensor which monitors thermal status for charging efficiency.