What does OBD II fault code p0038 mean?
What does OBD II fault code p0038 mean? What Does Code P0038 Mean? OBD II fault code P0038 is defined as “Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2), and is set when the PCM (Powertrain Control Module) detects a signal voltage from oxygen sensor #2 that does not fall within the predefined range for that sensor. How to set p0038 on oxygen sensor heater? Input voltages in all oxygen sensor heater control circuits should be equal to battery voltage; deviations of 10% will also set code P0038 and trigger the CHECK ENGINE light. Note that the electrical...