How do I fix code P0171?

How do I fix code P0171?

What repairs can fix the P0171 code?

1. Replacing the fuel pump.
2. Replacing the fuel filter.
3. Replacing the fuel pressure regulator.
4. Replacing the powertrain control module.
5. Replacing one or more injectors.
6. Replacing one or more oxygen sensors.
7. Replacing the mass air flow sensor.
8. Repairing a vacuum leak.

What does code P0171 mean Toyota?

Oftentimes, a P0171 means that your Toyota is having trouble with a dirty or faulty mass airflow (MAF) sensor, or a vacuum leak downstream of the MAF sensor (perhaps in the PCV line or in the valve itself). Of course, this code can also signify a bad O2 sensor in bank 1.

Where is the ECM located on a 2005 Toyota Corolla?

It’s behind the glove box compartment.

Can I drive my car with code P0171?

It is okay to drive a vehicle with P0171 for a short period of time, but driving with this code for an extended period of time can overheat the engine and cause internal engine damage.

Is there a recall on 2007 Toyota Corolla?

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2003-2008 Corolla, 2005-2008 Corolla Matrix, and Pontiac Vibe vehicles equipped with a front passenger air bag assembly replaced under a prior recall.

Can a vacuum leak cause P0171?

The lean condition can be caused by a vacuum leak, which introduces more air into the air-fuel mixture, or by a weak fuel system, which does not input enough fuel into the air-fuel mixture.

Why does my Toyota Corolla have a p0171 lean code?

Front oxygen sensor or air fuel ratio sensor The third and final common cause for this P0171 lean code on this Corolla with a 4 cylinder 1ZZ–FE 1.8 liter engine is the front oxygen sensor or air fuel ratio sensor.

What kind of engine does a Toyota Corolla have?

This is so common Toyota released a TSB or Technican Service Bulletin about this condition. It is Toyota TSB EG045-07. This covers 2003 to 2008 Corolla’s and Matrix’s with a 1ZZ–FE 1.8 liter engine.

What kind of air flow sensor does Toyota Corolla use?

Note: While this code is common on 1998 – 2006 Toyota Corolla’s with a 1.8 liter engine, there are some older Corolla’s that still flag this code but do not use a mass air flow sensor. Instead, they use a MAP sensor. For example, a 1998 Toyota Corolla uses a MAP sensor intead of a MAF sensor.

Is the MAP sensor on a Toyota Corolla too lean?

For example, a 1998 Toyota Corolla uses a MAP sensor intead of a MAF sensor. The O.E. part number for the MAP sensor on this vehicle is 8942002030. While the MAP sensor may go bad, it is not very common. Even if it did go bad, I have not seen it flag a lean code.