Abadal OBD Trouble Code 21

Oxygen sensor circuit

TPS sensor out of range

O2S Stays at center
O2S shorted to voltage
O2 sensor does not detect rich or lean condition, or O2 sensor input voltage too high. DRB will indicate which side with dual sensors. The O2 senso

No ignition reference

Main oxygen sensor fault (for ES300, SC300 and GS300 models)