What causes a P0322 code?

P0322 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 P0322 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0322 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

P0322

Ignition Engine Speed Input Circuit No Signal

What it means

The Engine Control Module (ECM) has detected that the engine speed sensor (Crankshaft Position Sensor) signal is missing, intermittent, or inconsistent with the camshaft position sensor signal.