What causes a P2133 code?

P2133 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 P2133 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2133 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

P2133

Throttle/Pedal Position Sensor/Switch F Circuit High Input

What it means

The Engine Control Module (ECM) has detected a voltage signal from the Accelerator Pedal Position (APP) sensor circuit that exceeds the maximum calibrated limit, typically indicating a short to power or a failed sensor.