What causes a P0052 code?

P0052 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 P0052 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0052 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

P0052

Heated Oxygen Sensor (HO2S) Heater Control Circuit High (Bank 2, Sensor 1)

What it means

The Engine Control Module (ECM) has detected a high voltage condition in the oxygen sensor heater circuit for Bank 2, Sensor 1. This circuit is responsible for pre-heating the sensor to maintain its operating temperature.