PDf Viewer  DTC P0031:00, P0032:00, P0037:00, P0038:00
– P0031:00: System malfunction location–A/F sensor heater control circuit low input.
– P0032:00: A/F sensor heater control circuit high input.
– P0037:00: HO2S heater control circuit low input.
– P0038:00: HO2S heater control circuit high input