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DTC P0037, P0038, P0057, P0058 HO2S2 HEATER EC-711 [VG33E] C D E F G H I J K L M A EC DTC P0037, P0038, P0057, P0058 HO2S2 HEATER PFP:226A0 Description UBS00DFU SYSTEM DESCRIPTION The ECM performs ON/OFF control of the heated oxygen sensor 2 heaters corresponding to the engine OPERATION CONSULT-II Reference Value in Data Monitor Mode UBS00DFV Specification data are reference values. On Board Diagnosis Logic UBS00DFW DTC Confirmation Procedure UBS00DFX NOTE: Sensor Input Signal to ECM ECM function Actuator Camshaft position sensor Engine speed Heated oxygen sensor 2 Heated oxygen sensor 2 heaters Engine coolant temperature sensor Engine coolant temperature Mass air flow sensor Amount of intake air Engine speed rpm Heated oxygen sensor 2 heater Above 3,600 OFF Below 3,600 rpm after the following conditions are met. ● Engine: After warning up ● Keeping the engine speed between 3,500 and 4,000 rpm for 1 ON MONITOR ITEM CONDITION SPECIFICATION HO2S2 HTR (B1) ● Engine speed: Below 3,600 rpm after the following conditions are met. – Engine: After warning up – Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and ON ● Engine speed: Above 3,600 rpm OFF DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0037 Heated oxygen The current amperage in the heated oxygen sen- ● Harness or connectors ● Heater oxygen sensor 2 heater P0057 P0038 Heated oxygen The current amperage in the heated oxygen sen- ● Harness or connectors ● Heater oxygen sensor 2 heater P0058 |