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

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE