What causes a P1336 code?

P1336 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 P1336 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P1336 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

P1336

Crank signal corruption during startup (high frequency)

What it means

Crankshaft Position (CKP) sensor signal noise or corruption detected specifically during the engine cranking/startup phase.