What causes a P2414 code?

P2414 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 P2414 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2414 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

P2414

O2 Sensor Exhaust Sample Error Bank 1 Sensor 1

What it means

The Engine Control Module detects that the oxygen sensor signal for the pre-catalyst exhaust stream is outside of calibrated voltage or current ranges, specifically indicating an exhaust sample error.