Ford Freestar P0052: Symptoms, Causes, Diagnosis + Common Fixes
P0052 is a rare and generic OBDII trouble code. It indicates that your Ford Freestar’s heated oxygen sensor is sending a signal to the PCM that is higher than its normal operating range. Terminology: HO2S- Heated Oxygen Sensor B2S1- Bank 2, Sensor 1 PCM- Powertrain Control Module (sometimes called ECM) P0052 Definition: HO2S – Heater … Read more