Skip the auto shop - Our mechanics make house calls

Q: My car has a check engine light and gave codes P2195, P2251, P0170

asked by on

My car has a check engine light and I checked the codes and this is what came up: P2195 Powertrain O2 Sensor Signal Stuck Lean bank 1 Sensor 1; P2251 Powertrain O2 Sensor Negative Current Control Circuit / Open bank1 Sensor1; P0170 Powertain Fuel Trim (Bank 1). I don't know very much about cars. What could this be, and how do I fix it?

Based on these fault codes, it sounds like you have an oxygen sensor that as failed and it will need to be replaced. The trouble codes will also have to be cleared after the sensor is replaced to see if there are any other issues. You may want to enlist the help of a mechanic, who will have the tools and expertise to diagnose the Check Engine Light codes and carry out the repair.

Here are some in-depth articles for your codes, these will help you understand some of the concerns and possible fixes for your car:

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

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: Car shudders and vibrates

The front crankshaft damper may have come apart and is not balancing the engine anymore. I recommend that you have a mechanic such as one from YourMechanic, come by and run a diagnosis on your car's vibration, including an inspection...

Q: My car won't kick start.

Hi there. Check the battery for voltage of 12.6 to 12.4 volts. If the battery is low, charge up the battery and retest. Check the battery cable connections and make sure that they are tight. Check the cables on the...

Q: Acura TL 08 leaking coolant thermostat repair gasket broken price for labor if I have all parts including thermostat coolant And g

You are welcome to buy your own parts and book a certified mechanic from YourMechanic to install those parts or perform associated repairs. When reviewing your quote online, open the “price breakdown” tab, and click on “parts options.” From there,...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.