What does p0171 mean on a Toyota check engine?
My Check Engine Light Came on while driving on the highway. The Toyota dealership said it was code P0171 — Fuel Too Lean. The technician was a nice guy and he explained to me that the service manual lists a number of things but based on his experience he would narrow it down to A/F sensors.
Is the p0171 code system too lean bank?
I have a 1.4 62 Plate,A14XER, I have the P0171 Bank lean issue. Cleaned the throttle body and checked the valve on the rocker cover. Diagnostic test shows Idle is 688?,doesn’t seem write? LTFT is 38% and STFT is 0.79%,this reading was taken at 1500rpm to open throttle body.
What is the cause of the code p0121?
What Is The Cause Of Code P0121? 1 Faulty Throttle Position Sensor (TPS) 2 Dirty Throttle Body 3 Faulty Throttle Body 4 An open or short of the TPS circuit 5 Bad connection of the TPS connector 6 Corrosion on terminal ends of electrical connections More …
What does the code p0171 mean on a car?
Code P0171 indicates Bank 1 of the engine has a lean fuel mixture. P0174 indicates Bank 2 of the engine has a lean fuel mixture. Engine Bank 1 is the same side of the engine as Engine Cylinder 1. Engine Bank 2 is the opposite side of the engine.
What does p0171 system too lean Bank 1 mean?
P0171 System Too Lean Bank 1 Technical Description. System Too Lean (Bank 1) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.
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?
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.