If your engine light is on and your gas cap is tight, and if you had the codes checked on the computer and it say's o2 sensor, this is an emissions problem, the parts are generally around 100.00 usd, and labor another 100.00 usd. but your car will not pass an emissions test until you do. However it will not ruin your engine, keep your window cracked just in case you are getting o2 in the cabin
Removal & Installation
3.5L
WARNING
When disconnecting the sensor electrical connector, do not pull directly on wire going into sensor.
Fig.
Fig.
Testing
NOTE
Allow the O2 Sensor to cool down before conducting the test. The O2 Sensor voltage should stabilize at 5.0 volts. Raising the hood may help in reducing under hood temps quicker.
P0141....O2 Sensor Heater Circuit (Bank 1 Sensor 2)
P0142....O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
P0143....O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P0144....O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0145....O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
P0146....O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
P0147....O2 Sensor Heater Circuit (Bank 1 Sensor 3)
P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)
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