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Home >> Nissan-Datsun >> 2008 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Control System - DTCS U1000 To P0153 (Qr25DE)) >> DTC P0037, P0038, P0057, P0058 Ho2S2 Heater >> On Board Diagnosis Logic

On Board Diagnosis Logic

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DTC DETECTING CONDITION AND POSSIBLE CAUSES CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0037
0037
(Bank 1)
Heated oxygen sensor 2 heater 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 (Heated oxygen sensor 2 heater circuit is open or shorted.)
  • Heated oxygen sensor 2 heater
P0057
0057
(Bank 2)
P0038
0038
(Bank 1)
Heated oxygen sensor 2 heater 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 (Heated oxygen sensor 2 heater circuit is shorted.)
  • Heated oxygen sensor 2 heater
P0058
0058
(Bank 2)