What causes a P2415 code?

P2415 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 P2415 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2415 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

P2415

P2415 O2 Sensor Exhaust Sample Error Bank 1 Sensor 1

What it means

The Engine Control Module (ECM) has detected that the upstream oxygen sensor (O2) signal indicates an exhaust sample that is inconsistent with expected fuel-to-air ratios.