Skip the auto shop - Our mechanics make house calls

Q: My 2000 ford expedition is showing 0171 and 0174 codes do you have a estimate to fix?

asked by on

Would not pass test

My car has 210000 miles.
My car has an automatic transmission.

The codes P0171 and P0174 point to a lean condition picked up by the oxygen sensors in the vehicle’s exhaust system. Since there is a warning from both banks, it may be safe to say that this is could be due to a vacuum leak. The leak may be in the area of the intake manifold or throttle body. Have a certified technician diagnose the cause of the Check Engine Light codes thoroughly in order to get a more clear estimate on the cost for repair.

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
  1. Home
  2. Questions
  3. My 2000 ford expedition is showing 0171 and 0174 codes do you have a estimate to fix?

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: Key not turning in ignition

Hi there. This problem is caused by a lack of mobility in your ignition cylinder. The bumps on your key depress a series of channels in the cylinder in the correct combination of order for it to release it's locking...

Q: I failed a smog check with the codes PO171 & PO174, saying the system is too lean on the bank 1 & 2. Can you tell me what the problem is?

Hi there. When the two codes P0171 and P0174 come up for a lean system on both banks of your engine, then either all of the fuel injectors are not working properly or your fuel pressure has dropped. Check the...

Q: What's wrong its not a head gasket

Hello. Usually oil that quickly drains into the cooling system is caused by a blown head gasket, or damaged cylinder heads. If you have verified that those things are not the source of your issue, then I would move on...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...