Code P0038 2011 l4-2.4l hyundai sonata

Q: Code P0038

asked by on November 17, 2017

I got the code P0038. And it says heater oxygen sensor heater control circuit high bank 1 sensor 2. What does that mean? What needs to be fixed ?

My car has 128000 miles.
My car has an automatic transmission.

This code is triggered when there is excessive voltage detected in the heated oxygen sensor circuit. This may cause the oxygen sensor to produce faulty readings resulting in improper air/fuel adjustments to be made by the computer. As you may know, the oxygen sensors which are part of your emissions system read exhaust gases to determine whether or not the appropriate amount of oxygen is present in the exhaust. Based on this reading, this information is relayed to the car’s ECU which then makes a determination as to whether or not to add more or less fuel to the engine. When too much or too little oxygen is present, this will cause check engine light to come on. Too much oxygen may be present in the exhaust gas due to things like an exhaust leak, a vacuum leak, a faulty mass air flow sensor (causing a lean fuel condition) or faulty fuel injectors. Too little oxygen may be present in the exhaust gas may be caused by things like a clogged air filter, a failing mass air flow sensor (causing too much fuel to be introduced to the motor), bad fuel injectors or a clogged catalytic converter. When the O2 sensor is not working properly, this will cause false readings to be relayed to the computer causing inaccurate adjustments to be made to the intake and fuel system in your engine. I would suggest having an expert from Your Mechanic come to your home to diagnose your emissions system.

Was this answer helpful?
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

Get a quote

What others are asking

Where is the horn relay located on my vehicle? If that isn't the problem what else could be wrong with the horn?

Hello. The horn relay should be located in the fuse panel located under the hood. If you do not have a owner's manual it may be possible that there is a diagram on the inside of the fuse panel cover....

Low oil pressure light came on car cut off won't start anymore

When the engine is running, oil is pumped throughout to lubricate and cool all of the places where metal slides against metal. If the engine runs low on oil, or if something goes wrong with the pump or oiling system,...

Calipher stuck

Hello. If the caliper will not release from the rotor then the brake line should be cracked open first to see if there is pressure int he hydraulic system that is keeping it locked up. If not then the caliper...

Related articles

The Best Used Cars to Buy If You're a Doctor Who Makes House Calls
If If you are a doctor who makes house calls, reliability is likely to be at the forefront of your mind when it comes to choosing a used car. You also expect a certain level of comfort. We have...
A Buyer’s Guide to the 2011 Dodge Dakota
2011 2011 marked the final year of production for Dodge’s venerable Dakota pickup truck. It was a compact pickup, not quite the size of the Ram, and competed with similar models like the Chevy S10 and the Ford Ranger (both...
The Best Used Cars to Buy If You Just Retired
Here’s Here’s a cruel, hard fact – car manufacturers no longer target seniors. Instead, they devote their time and energy to appealing to the 18-45 demographic. Still, some features make certain cars more suitable for older drivers. We have...