What causes a SPN 1119 code?

SPN 1119 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 SPN 1119 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 1119 active.

How do I fix SPN 1119?

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

J1939 SPN

SPN 1119

Accelerator Pedal Position Sensors Correlation

What it means

The signals from multiple accelerator pedal sensors do not match each other, indicating a potential sensor or wiring failure.