Changed By: Boxsterra Change Date: May 03, 2021 02:27PM Definitely nothing to lose sleep over
The exhaust won't affect the O2 sensor readings unless you also changed the cats. This code means that the O2 sensor heating circuit is not functioning properly. It could be the electrical circuit, the connector, or the sensor.
I would start by checking fuse C2 (oxygen sensor heater power), then checking that the electrical plug is corrosion-free and seated properly. Then I would test that the O2 sensor heating wires (pins 1&2) are connected with a small amount of resistance (probably under 10 ohms). Then I would test that the car is supplying 12v to the heater circuit by unplugging the sensor and testing the voltage between the heater circuit pins (1&2) to verify battery voltage (12-ish volts).
Changed By: Boxsterra Change Date: May 03, 2021 02:27PM Definitely nothing to lose sleep over
The exhaust won't affect the O2 sensor readings unless you also changed the cats. This code means that the O2 sensor heating circuit is not functioning properly. It could be the electrical circuit, the connector, or the sensor.
I would start by checking fuse C2, C2 (oxygen sensor heater power), then checking that the plug is corrosion-free and seated properly. Then I would test that the O2 sensor heating wires (pins 1&2) are connected with a small amount of resistance (probably under 10 ohms). Then I would test that the car is supplying 12v to the heater circuit by unplugging the sensor and testing the voltage between the heater circuit pins (1&2) to verify battery voltage (12-ish volts).
Original Message
Author: Boxsterra Date: May 03, 2021 02:26PM Definitely nothing to lose sleep over
The exhaust won't affect the O2 sensor readings unless you also changed the cats. This code means that the O2 sensor heating circuit is not functioning properly. It could be the electrical circuit, the connector, or the sensor.
I would start by checking fuse C2, then checking that the plug is corrosion-free and seated properly. Then I would test that the O2 sensor heating wires (pins 1&2) are connected with a small amount of resistance (probably under 10 ohms). Then I would test that the car is supplying 12v to the heater circuit by unplugging the sensor and testing the voltage between the heater circuit pins (1&2) to verify battery voltage (12-ish volts).