DTC P0037-O2 Sensor 1/2 Heater Circuit Low: Notes

Fig 1: O2 Sensor 1/2 Heater Circuit - Circuit Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article.

When Monitored:
Battery voltage above 10.6 volts, ASD is powered up, and O2 heater is on.
Set Condition:
Desired state does not match Actual state. One Trip Fault. Three good trips to turn off the MIL.