What causes the Diagnostic Code p0171 to be triggered?
What causes the Diagnostic Code p0171 to be triggered?
If the fuel mixture is beyond this range, it is not possible for the O2 sensor to adjust the mixture. An error code is then triggered in the engine control unit. This error is then stored in the memory. If there is a lean mixture, the diagnostic code p0171 is then triggered.
What does the low voltage code p0137 mean?
More specifically, this means that the PCM is detecting a low voltage from the #2 O2 sensor in Bank 1. Code P0137 triggers when the PCM detects that the signal from oxugen sensor 2 on Bank 1 is below a specific value for a certain amount of time. The Bank 1 portion of the code refers to the side where the #1 cylinder is located.
What are the symptoms of a p0171 leak?
What Is The Cause Of P0171? 1 Dirty or faulty mass airflow sensor 2 Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket. 3 Weak fuel pump 4 Clogged or dirty fuel injectors 5 Clogged fuel filter 6 Exhaust leak 7 Faulty oxygen sensor 8 Faulty air-fuel ratio sensor
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 Mercedes code p0173?
The most common cause of P0170 and P0173 on a Mercedes-Benz is a defective mass-airflow sensor. The MAF sensor gets dirty over time triggering the CEL and the two codes.
What does p0173 OBD2 code mean?
OBD2 Code P0173 Volvo definition: This code is one that surfaces with certain makes of automobiles more than others. In writing this article I’ve added Mercedes-Benz-specific info since it seems that M-B (and VW) are most prone to having this P0173 Volvo surface along with misfire codes or other fuel trim codes.
What does code p0172 mean on a Chrysler?
A common trouble code with the Chrysler PT Cruiser is P0172. This code number references a number that is given to you when you plug your car into a OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common. It means that the motor is running with a rich condition.
What is a p1171 code?
- Definition. Injector having excessive return flow or back leakage is probably the most common of injector failure.
- which is usually its most obvious symptom.
- Possible Causes. Technicians usually start their diagnosis for this code by searching for leaks in the vacuum.
