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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (VK50VE) - FX50 - DTC U0101, U0113, U1003, U1001, U1024 & P006A Through P0133 / P0153 >> DTC P0037, P0038, P0057, P0058: Ho2S2 Heater >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0037 Heated oxygen sensor 2 heater (bank 1) control circuit low The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater).
  • Harness or connectors (The heated oxygen sensor 2 heater circuit is open or shorted).
  • Heated oxygen sensor 2 heater
P0038 Heated oxygen sensor 2 heater (bank 1) control circuit high The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the heated oxygen sensor 2 heater).
  • Harness or connectors (The heated oxygen sensor 2 heater circuit is shorted).
  • Heated oxygen sensor 2 heater
P0057 Heated oxygen sensor 2 heater (bank 2) control circuit low The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater).
  • Harness or connectors (The heated oxygen sensor 2 heater circuit is open or shorted).
  • Heated oxygen sensor 2 heater
P0058 Heated oxygen sensor 2 heater (bank 2) control circuit high The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the heated oxygen sensor 2 heater).
  • Harness or connectors (The heated oxygen sensor 2 heater circuit is shorted).
  • Heated oxygen sensor 2 heater