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Home >> Suzuki >> 2012 >> Equator Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine General Information & Diagnosis - Qr25DE (2 Of 5) >> DTC P0037, P0038 HO2S2 Heater >> On Board Diagnosis Logic

On Board Diagnosis Logic

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0037
0037
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 (The heated oxygen sensor 2 heater circuit is open or shorted.)
  • Heated oxygen sensor 2 heater
P0038
0038
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 (The heated oxygen sensor 2 heater circuit is shorted.)
  • Heated oxygen sensor 2 heater