What causes a SPN 2434 code?

SPN 2434 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 2434 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 2434 active.

How do I fix SPN 2434?

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 2434

SPN 2434 - Engine Exhaust Manifold Bank 1 Pressure

What it means

Indicates that the Engine Exhaust Gas Pressure sensor for Bank 1 is reporting data that is above, below, or mismatched compared to other pressure sensors.