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P0037, P0038, P0057, P0058 HO2S2 HEATER EC-1103 < DTC/CIRCUIT DIAGNOSIS > [VQ40DE FOR MEXICO] C D E F G H I J K L M A EC N P O P0037, P0038, P0057, P0058 HO2S2 HEATER Description INFOID:0000000009481746 SYSTEM DESCRIPTION The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature. OPERATION On Board Diagnosis Logic INFOID:0000000009481747 DTC Confirmation Procedure INFOID:0000000009481748 NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- ing the next step. Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at idle. WITH CONSULT 1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT. Sensor Input signal to ECM ECM function Actuator Camshaft position sensor (PHASE) Engine speed Heated oxygen sensor 2 Heated oxygen sensor 2 heater 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. minute and at idle for 1 minute under no load ON DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0037 Heated oxygen The current amperage in the heated oxygen sen- • Harness or connectors (The heated oxygen sensor 2 heater circuit is • Heater oxygen sensor 2 heater P0057 P0038 Heated oxygen The current amperage in the heated oxygen sen- • Harness or connectors (The heated oxygen sensor 2 heater circuit is • Heater oxygen sensor 2 heater P0058 |