Q: how many o2 sensors does my vehicle have and where are they located?
I want to know how many o2 sensors my vehicle has and where are they located
My car has 117000 miles. I have a 2005 Chrysler Pacifica 3.5l V6 My car has an automatic transmission.
Your vehicle uses two oxygen sensors. According to Alldata, there should be one oxygen sensor that is accessed just behind the rear cylinder head, just behind where the coils mount to the valve cover. The other oxygen sensor is mounted near the area that the exhaust pipe exits the bottom of the engine compartment and starts to run towards the back of the vehicle. If you need a hand locating and/or repairing the oxygen sensors, contact a certified mechanic, like those available at YourMechanic.com.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
Sloshing noise on startup
The first thing to do is check your coolant (https://www.yourmechanic.com/article/how-often-do-i-need-to-top-off-my-coolant) and see if you're low on fluid. When you are low on coolant, air bubbles are created and these air bubbles will slosh through the dash because the heater core...
ABS, fuel, and temperature gauge lights on when start car
Hello. I think that you should have your alternator retested (https://www.yourmechanic.com/article/how-to-test-your-alternator_2) by a different mechanic. The alternator cannot possibly be tested correctly with a dead battery. If the vehicle is not running, the alternator will not do anything. If the...
Knocking sound
Hello. This is a safety mechanism that will not allow you to shift without having your foot on the brake. This is a pin down in the console attached to the shift lever that doesn't allow the shifter to be...
Misfiring
This is often times related to what is called an idle air control valve which controls the air/fuel mixture at idle speed. When this is not working properly, this can cause the car to run either too rich (too much...
Hearing a clunking noise while turning the steering wheel
Hi there. This sounds like you have axle failure. Look under the car where the axle boots are and see if the boots are torn, leaking, or missing. Also look for grease that may have been leaked; usually all around...
Exactly where is my thermostat located?
If you follow the lower radiator hose up toward the engine, that lower hose terminates at the thermostat housing. The housing itself is attached to the engine with three relatively small bolts. If you remove those three bolts and the...
Does a car leak antifreeze when it is started or does it matter?
You should not see any leaks from a vehicle. The leak is most likely from the water pump on the engine. You should have the cooling system pressure tested to check for any leaks in the system. If you need...
Oil Gasket Leak
Without knowing what the leak is I would have to agree with the last diagnosis that it should be done ASAP. This is because most oil leaks can get worse over time and can cause the engine to get low...
Related articles
How Do Sensors Get Dirty or Damaged?
Car sensors measure and relay vital information to the ECU. Some sensors can get dirty from normal use, or fail if the car overheats or has a problem.
2012 Chrysler 200 vs. 2012 Chevrolet Malibu: Which One Should I Buy?
When you are looking for a small-range sedan, you need to get somewhere quickly and inexpensively, and may even need to take a few kids with you. Slightly larger than a commuter car, these mid-size options offer decent gas mileage,...
How to Buy a Good Quality Oxygen Sensor
Oxygen Oxygen sensors help your vehicle control both the fuel and ignition systems, making it a critical component to ensure your car is running and starting smoothly. Boost your ride’s fuel performance and improve emissions output with a properly-functioning oxygen...
Browse other content
Maintenance
Services