LEXUS: MIL ON DTC P2195, P2197, P0138, P0158, P0031, OR P0051. ENGINE/HYBRID SYSTEM. ENGINE CONTROL. SOME VEHICLES MAY EXHIBIT A MIL ON CONDITION WITH ONE OR MORE OF THE DIAGNOSTIC TROUBLE CODES (DTCS) STORED IN THE ENGINE CONTROL MODULE/ECM (SAE TERM: POWERTRAIN CONTROL MODULE/PCM). OXYGEN (A/F) SENSOR SIGNAL STUCK LEAN (BANK 1&2 SENSOR 1); OXYGEN SENSOR CIRCUIT HIGH VOLTAGE (BANK 1&2 SENSOR 2); OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1&2 SENSOR 1). *PE