Ford P0133 OBD-II Trouble Code Definition: P0133 HO2S11 Sensor Circuit Slow Response P0133 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0133 O2 Sensor Circuit Slow Response What does the code mean? OBD-ii Code P0133 definition: This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted […]