Want this question answered?
Yes
4
They are screwed into the exhaust pipe, behind the engine.
They are screwed into the exhaust pipe, behind the engine.
3.8L has two. 3.5L and 4.0L have four.
The oxygen sensors are screwed into the exhaust system. They are not under the lower intake.
Heated oxygen sensor heater circuit malfunction (bank 1, sensor 1): Open or short in heated oxygen sensor heater circuit Heated oxygen sensor heater malfunction (Haynes Repair Manual)
The air fuel sensor heater circuit is also known as a Oxygen Sensor. It's main purpose is to detect the amount of oxygen in the exhaust gas compared to the outside level of oxygen.
Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)symptomsOther than the MIL light illuminating you may not notice any performance issues.causeA short in the O2 sensor heater circuit or the sensor itselfA faulty O2 sensor heaterWiring or connectors are broken or frayed to the sensor or relayBad PCM or ECMThe fixCorrect wiring short or loose connector found in inspection.and/orReplace the bank 1 sensor 2, O2 sensor
Newer oxygen sensors are heated for accuracy. If the heater element goes bad the oxygen sensor doesn't work and needs to be replaced. If you have an oxygen sensor heater malfunction, it just means that the oxygen sensor has failed.
The oxygen sensor is "done". It should be replaced.
P0060 - heated oxygen sensor bank2 sensor 2 heater resistance p0062 - heated oxygen sensor bank2 heater control circuit