What causes a P0487 code?

P0487 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 P0487 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0487 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

P0487

EGR Throttle Control Circuit Open or Range Performance

What it means

The Engine Control Module (ECM) detects an issue with the EGR intake throttle valve actuator control circuit, indicating it is not responding to commanded positions.