JeanNYGUARD

Ford Taurus 2002 3.0L V6 EFI

So I had a check engine light on. I bought a code reader... and got the following codes :

P0135 - Oxygen Sensor Heater Bank 1 Sensor 1
P0156 - Oxygen Sensor Circuit Bank 2 Sensor 2

P0306 - Cylinder 6 Misfire Detected
P0316 - Misfire Occurred In The First 1000 Engine Revolutions

The ones that concern me are P0135 & P0156. The P0306 & 0316 are I believe either a faulty spark plug or spark plug wires. Or it could be the device the spark plug wires go into (forgot the name) - (Could you tell I'm new with repairing cars lol - I spent a year or two learning from my dad but I still need more knowledge and experience.

The P0135 I know is under the coolant tank by the front head lights. I have NO idea where P0316 is?

Do you guys know of a diagram I can use to find it?

Also what does a catalytic converter look like and where is it?

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CatSkinner

Catalytic converter it under the car attached to the exhaust pipe between the muffler and the exhaust manifold. P0316 is not an actual thing you can touch or replace, it's a symptom. I think you meant P0156 which indicates that the O2 sensor after the catalytic converter in the exhaust pipe. It'll be mounted similar toe how the other one is.

R.S.LOGAN

This might help you understand what's involved ,

Where is the O2 sensor on a Ford Taurus and can a backyard mechanic replace it

WalkerTech

Jean, I am a Product Specialist with Walker Products, a manufacturer and worldwide distributor of oxygen sensors. Some great advice on here. Just wanted to add that with these electrical issues, there may be a short or broken wire on your harness (the end that plugs onto your sensor). Be sure to check those wires for exposed areas or cuts. If that is the issue, then buying a new sensor will not help.

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R.S.LOGAN

100% correct , good advice .Slipped my mind to mention this often common cause .

JeanNYGUARD

Thanks so much for all the advice guys ... I really appreciate it.

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R.S.LOGAN

You're more than welcome , if needing any further help/advice get back to forum .