Q: Check engine light and P0139 code on a 2006 Hyundai Coupe

asked by on June 07, 2016

I have an O6 Hyundai Coupe and my check engine light popped up the other day. I've done the OBD code scanner and P0139 code came up, which is oxygen sensor two with slow response. How do I move the first one because they are on so very tight?

Check Engine Light is on Inspection $79.99 - $89.99 Get a Quote

You’ve got to realize that those things often pretty much weld themselves in. From the difference in the metal and the sensor, and the metal and the exhaust. I use special sockets that fit on them, which anybody can buy. They cost 8-10 bucks a piece. Then I use a long extension bar, we call them cheater bars that fit on the socket. I pull like mad and it almost always makes them loose. If it doesn’t break them loose, then get yourself a little torch and heat it all up until it’s red hot and then it will always come off. Heating metal red hot always makes it nice and slippery inside so it would come apart. You’re going to replace it anyway so it doesn’t really matter if you heat it up and ruin up the old one because you are throwing it anyway. If you want to have your Check Engine Light issue diagnosed and taken care of, a technician from YourMechanic can come to your home or office to perform this task for you.

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

How to install oil pan gasket to a 2006 Dodge Charger

Hi there. You might want to read this article to give you a frame of reference. However, to receive specific steps for your vehicle, you'll want to purchase a service and repair manual for your Dodge Charger or have a...

My truck won't shift to reverse

There are a few things that can cause this. Check the transmission fluid level to see if it is low. Sometimes low transmission fluid levels will prevent the transmission from shifting into gear. If you still have forward gears, but...

while driving at speed above 40mph i feel humming sound from real which die down on appling break.

Thanks for writing in about your Hyundai Santa Fe. From what you've described, it sounds like it may be from the rear wheel bearings. When the rear brakes are applied, the brakes will quiet the noise down. Have a mechanic,...

Car pulls to the right after replacing the driver side rear tire.

Logically, if the car started pulling immediately AFTER you put a new tire on the rear, it would seem unlikely that the pulling is due to an alignment issue. Uneven tire inflation will cause pulling so do check to make...

Opinion on car theft through OBD port

Not really. A lot of it is just scam you know. People aren't stealing by plugging it in your car. First, they have to get in to begin with. The only time something like that happens is with high-end stuff...

Horn stays on

Based on the information you provided, it sounds like you have a short in the horn's wiring. It may be at the steering wheel but could also be elsewhere. Electrical tests will be able to confirm the location of the...

Engine light keeps turning on, 2006 Dodge Caravan

It sounds to me like the dealership simply tightened the gas cap and didn't charge you for it nor recorded the transaction. Not to worry though. I don't believe tightening the gas cap would be the proper repair. What you...

Why does my car make a loud noise when I turn my front wheels?

Hi, thanks for your question. I'd be happy to provide my insight. This is a common sound when the struts are worn out or when there is separation between the strut nut and the strut mount. I would also suggest...

Brakes changed, but now having to pump them to stop - 2006 Saturn Vue

Hello - you would certainly have air in the brake system after having the brake caliper piston pop out as you describe, which would require bleeding the brakes to repair, and it's quite likely the caliper piston seal was damaged...

Related articles

2012 Chevrolet Cruze vs. 2012 Hyundai Elantra: Which One Should I Buy?
When you’re looking for a four-door sedan, you’re likely interested in a smaller family car that still offers decent styling and looks, great gas mileage, and a comfortable interior that will keep your family safe as you’re driving. While not...
B1336 OBD-II Trouble Code: Door Ajar Right Rear Circuit Open
B1336 means there is an error with the door ajar right rear circuit, likely due to a faulty door ajar switch or circuit, or defective door latch.
2012 Hyundai Elantra vs. 2012 Ford Focus: Which One Should I Buy?
The Hyundai Elantra and the Ford Focus are both offerings in the inexpensive compact sedan category, and both represent some of the best offerings in that class. Compact cars are slightly larger than a subcompact, but smaller than a mid-size;...