Q: I'm getting code po171 lean bank 1.

asked by on

I replaced 02 sensor bank 1 sensor 1,fuel filter,air filter,pcv,mass air spark plugs,replaced intake gasket . Truck ran go for about 20 miles then started to run rough no power.running same way before all new parts installed.

My car has 20500 miles.
My car has an automatic transmission.

There vehicles are known for the intake manifold warping and having fuel injector problems at higher miles. The fuel trims can be checked while the engine is warm and spraying around the intake manifold gaskets to see if the trims jump around once brake cleaner or starting fluid is sprayed around the seals. Consider hiring an experienced technician equipped with a professional scan tool like one from YourMechanic who can come out and run a few tests on your lean condition to offer a more personal diagnosis.

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
  1. Home
  2. Questions
  3. I'm getting code po171 lean bank 1.

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: My Acura TSX started to jerk while I was at a full stop. Not much longer my engine light started flashing any tips or ideas? 2005 Acura TSX

Hello, thank you for writing in. With the check engine light on, you will want to start by scanning the vehicle for diagnostic codes. Use that information to help point you in the right direction. You can have this done...

Q: Bad lighting coming from the low beams

Your Body Control Module (BCM) controls the headlights on your truck. According to GMC your headlights meet all safety standards; however they have a technical service bulletin (TSB) that may pertain to your situation. The TSB number PIT5374 dated February...

Q: Check Engine code p0758

A P0758 code indicates a problem with the vehicle's shift solenoid, specifically shift solenoid B. If this light has come on, then the vehicle may be experiencing poor performance, or unusual shifting. As this component is located on the underside...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...