What causes a P1196 code?

P1196 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 P1196 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1196 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

P1196

Rail pressure calibration high range fault

What it means

The Engine Control Module (ECM) has detected that the fuel rail pressure is higher than the commanded or expected calibration range during specific operating conditions.