DTC P0152-O2 Sensor 2/1 Circuit High: Notes
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article.
- When Monitored:
O2 Sensor Heater Temperature is greater than 496°C (925°F) and battery voltage greater than 10.99 volts.
- Set Condition:
The Oxygen Sensor voltage is above 3.99 volts for 30 seconds. One Trip Fault. Three good trips to turn off the MIL.
| Possible Causes |
|---|
| (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (K902) O2 RETURN UPSTREAM CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (K43) O2 2/1 SIGNAL CIRCUIT OPEN |
| (K902) O2 RETURN UPSTREAM CIRCUIT OPEN |
| O2 SENSOR |
| PCM |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.