Skip the auto shop - Our mechanics make house calls

Q: Getting various error codes

asked by on

Error codes P0220, P1037, and P0446 coming up.

Sounds like you have several things going on. The first code P0220 is usually set because of a variance in voltage. This is sometimes due to a loose ground connection. A mechanic should be able to look up power and ground distribution locations and check the ground connections are clean and tight. The second code P0137 is an oxygen sensor code. This code is set when a lean condition is detected for an extended period of time. This can be caused by a vacuum leak or a faulty oxygen sensor. The last code P0446 is set when an EVAP vent issue is detected. A bad vent solenoid or faulty connection can trigger this code. None of these codes seem to be related to each other and are probably separate issues. Diagnosing these codes requires the use of specific diagnostic information, scan tools, and correct interpretation of the information collected. Consider giving YourMechanic a call to help you with diagnosing these codes.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Getting various error codes

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

Q: changed my ignition on a 2005 Yukon GMC now I can't get the car to start and stay on

You have to do the "re-learn" procedure for the ignition switch. The ignition switch/cylinder is part of the anti-theft system. When you replace a key or ignition switch/lock cylinder, you must do this procedure in order for the vehicle to...

Q: code p0446

Hi there. A P0446 (evaporative emissions system gross leak detected-Toyota defined meaning) sets when there is a fault detected in the evaporative system. The evaporative system is an emissions system responsible for preventing the leakage of fuel vapor into the...

Q: Why does my engine light keep coming back on after I fixed the part the code it blew

Hi there: One of the major problems car owners have with mechanics or dealerships specifically is that they really don't go the extra effort to fix all issues with a vehicle. In most cases, they'll receive a complaint from a...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.