What does the fuel trim system Lean Bank 1 Code mean?
P0171: Fuel Trim System Lean Bank 1. Malibu P0171 Code Defined. P0171 is an OBDII trouble code. The code technically stands for: Fuel Trim System Lean Bank 1. 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.
What does the code p0171 stand for?
P0171 is an OBDII trouble code. The code technically stands for: Fuel Trim System Lean Bank 1 The code is thrown when the oxygen sensors detect that there’s not enough oxygen in the exhaust system.
When is the p0171 system too lean Bank 1 detected?
If the P0171 is combined with the P0174 code, it’s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced. When is the code detected?
What are the symptoms of fuel trim code p0171?
Some common symptoms of code P0171 could include the following-. Stored trouble code and possibly an illuminated warning light. Several other codes relating to misfires and/or fuel pressure may be present. Depending on the application and the nature of the problem, varying degrees of power loss may be present.
What causes a p0171 code?
Causes of the P0171 code may include: A faulty fuel pressure regulator. A weak fuel pump. A clogged fuel filter. A faulty powertrain control module. A vacuum leak. Faulty injector(s)
What does code p0171 mean?
P0171 is a diagnostic trouble code (DTC) for “System Too Lean (Bank 1)”.
What does this code mean p0171?
The P0171 code is a standard code in all vehicles manufactured since 1996 from all manufacturers. The code or check engine light usually means that an oxygen sensor has detected a high amount of oxygen in the exhaust, also known as “running lean.” There may be no noticeable drivability symptoms as a result of this code.
What is p0171 engine code?
The P0171 OBD-II code means that, on the first bank of the engine , the fuel system is running weak or a vacuum leak exists near this side of the engine. A lean condition occurs when the engine either receives too little fuel or too much air. What are the causes of the P0171 code? Causes of the P0171 code may include: