Possible Causes
NOTE:
Measured oxygen concentration implausibly high compared to model oxygen concentration for Sensor 1 Bank 1, during part load and during low part load above allowable range
- The powertrain control module has determined failures where some circuit quantity, reported via serial data, is above a specified range
- Other related DTCs Heated oxygen sensor heater circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Heated oxygen sensor failure