What causes a P1727 code?

P1727 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 P1727 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1727 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

P1727

VGTDD actuator position deviation diagnosis

What it means

Variable Geometry Turbocharger Electronic Actuator Position Deviation. The ECU has detected that the actual position of the turbo vanes does not match the commanded position.