Why do I get a p0171 code on my computer?
There are a number of engine parts or sensors which may cause the trigger of the p0171 code, along with a lean mixture. Aside from simply focusing on p0171, it is also best to look for other sensor-related codes. Doing so will be able to provide an indication as to where you can start searching for solutions.
Can a faulty MAF sensor cause a p0171 code?
If you start replacing MAF sensors, O2 sensors, etc., you will probably spend a lot of money without results. A faulty O2 sensor is not a very common cause of the P0171 code, even if many people start to replace it directly when they see this code. Diagnosing the P0171 code is easy if you have the right tools to do it.
What causes a fuel pump error p0171?
Here are some of the most common causes of this error: Low fuel pressure (this usually comes as a result of a faulty fuel pump, faulty fuel pressure regulator or filter) How to Solve Error p0171 Code?
When does the front O2 sensor Register p0171?
P0171 is triggered when the front O2 sensors recognize a lean mixture. It can both be a short-term lean mixture or a long-term lean mixture. If it’s a short-term lean mixture the fuel mixture is often very lean. If it’s a long-term mixture, it can register the code because of a small notice of lean mixture over time.
What does the p0171 code on bank 1 mean?
Code Definition. P0171 – System Too Lean (Bank 1) What does the P0171 code mean? The P0171 code means that the Oxygen (O2) sensor on bank 1 recognized a too lean mixture to correct it. The Oxygen O2 sensors have the ability to correct a fuel mixture of +-15%. If it needs to correct the air-fuel mixture more than that, the P0171 code will be stored.
What causes a lean mixture on the p0171 code?
Intake leaks are a widespread problem when it comes to the P0171 code. Intake/Vacuum/boost pipe leaks can trick the MAF sensor and cause a lean mixture. The MAF sensor measures all air that is going into the engine and telling the engine control unit which amount of air it is.
If you start replacing MAF sensors, O2 sensors, etc., you will probably spend a lot of money without results. A faulty O2 sensor is not a very common cause of the P0171 code, even if many people start to replace it directly when they see this code. Diagnosing the P0171 code is easy if you have the right tools to do it.
What to do if your Chevy has p0171?
Reading and analyzing fuel trims and the freeze frame data is the key to properly diagnosing P0171. Use FIXD to scan your Chevrolet to verify P0171 is the only code present. If other codes are present, they must be addressed first.