Common questions

How do I fix the code P0171 on my Toyota?

How do I fix the code P0171 on my Toyota?

Most of the time, the best way to respond to a P017 is to try cleaning the MAF sensor and the lines running to and from it. This will often resolve this issue. When you clean the MAF sensor, be sure to inspect all of the lines including the vacuum and PCV hoses.

Can low oil cause P0171?

No, the level of the oil has no role in the codes.

How much is a P0171 sensor?

A broken vacuum hose sucking in air can be around $50, or a clogged fuel filter for $100. On the other hand, an oxygen sensor or mass air flow sensor can bring a bill of $400 to $500 dollars. A bad fuel pump can be really expensive costing around $600 to $800.

Can a bad PCV valve cause P0171?

The most common causes of the P0171 code are vacuum or intake leaks, low fuel pressure, faulty PCV valve, or a faulty MAF sensor. Other things can also cause the P0171 code.

What causes the p0171 lean code on a Toyota Corolla?

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 is the fault code on a Toyota Corolla?

P0171 Lean is a very common fault code on Toyota’s. In this article I am going to be discussing the 1.8, 2.4 4 cylinder engines in the Toyota Corolla, Camry, Rav4 and Matrix along with the V6 3.5 liter engine used in the Camry, Avalon, Solara and Sienna van.

What does the OBD-II trouble code p0171 stand for?

P0171 is an OBDII trouble code. The code technically stands for: The code is thrown when the oxygen sensors detect that there’s not enough oxygen in the exhaust system. This is commonly referred to as a “lean” condition.

Which side of the engine has a p0171 O2 sensor?

the side of the engine that has P0171 is one of the more common trouble codes. This code is triggered by the first downstream (front) O2 sensor. Bank #1 refers to the side which has cylinder #1, In a 4 cylinder it is the cylinder in the front of the engine. The downstream O2 sensor monitors the condition of the catalytic convertor.