What causes a P0676 code?

P0676 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 P0676 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0676 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

P0676

Cylinder 6 Glow Plug Circuit Fault

What it means

The Engine Control Module has detected an open circuit, short to ground, or high resistance in the glow plug or control circuit for cylinder number 6.