It is okay to drive a vehicle with P0171 for a short period of time , but driving with this code for an extended period of time can overheat the engine and cause internal engine damage.
How much does it cost to fix P0171 code?
What is the cost to resolve a P0171 code? This code will require a diagnostic check, which will run about $100 depending on the time it takes to find the issue. As there is a laundry list of reasons why the engine runs lean, the average price per repair will vary greatly.
What does code p0171 mean?
The P0171 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 causes code P0171?
A plugged Fuel Filter or poorly functioning Fuel Pump can set the P0171 code. The computer hears (accurately) from the Oxygen Sensor that the Fuel Mixture is too lean so the computer keeps increasing the amount of fuel being delivered into the combustion chambers.
Can a dirty air filter cause a P0171 code?
If the filter is clogged or excessively dirty, this is enough to impede or restrict the air flow, hence resulting in a lean running condition. Besides a dirty air filter, the P0171 code can also be blamed on a dirty or faulty MAF sensor and a clogged fuel filter .
How do I get rid of code P0171?
- Replacing the fuel pump.
- Replacing the fuel filter.
- Replacing the fuel pressure regulator.
- Replacing the powertrain control module.
- Replacing one or more injectors.
- Replacing one or more oxygen sensors.
- Replacing the mass air flow sensor.
- Repairing a vacuum leak.
Can a bad O2 sensor cause P0171?
You probably know that the answer the questions is — no! A P0171 or P0174 lean code with an O2 sensor reading lean all the time mean — well, several things. The real problem may not be a bad O2 sensor , but possibly be an engine vacuum leak, low fuel pressure or dirty fuel injectors that are causing the engine run lean.
What are the signs of a bad mass airflow sensor?
- Stalling, jerking, or hesitation during acceleration.
- air fuel ratio is too rich.
- air fuel ratio is too lean.
What is P0171 code for Ford?
What Does P0171 Mean For Your Ford? Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean condition exists and code P0171 is triggered.
What is Bank 1 too lean?
The OBDII trouble code P0171 – System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel . Driving a car with the code P0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion temperature is higher.
Can bad spark plugs cause lean condition?
A common symptom of your car running lean is that your spark plugs are clean or turn white. ... Running lean can be an indicator for multiple significant problems in your car, and it's not a simple affair to determine what might be the underlying cause.
Can a dirty air filter cause a P0101 code?
In vehicles with an oil-soaked aftermarket air filter, oil from the air filter can contaminate the MAF sensor element , causing the code P0101 or other MAF-related codes. In some Volvo cars, the code P0101 could be caused by a dirty throttle body or vacuum leaks in the PCV system (e.g. vacuum line to the oil separator).
Can a dirty air filter cause high idle?
A clogged filter will reduce the flow of air into the engine , causing a rough idle. It may also increase your fuel consumption. Replacing your air filter is a simple process of removing the old one and replacing it with a new filter.
What is Bank 1 and Bank 2 on a car?
Bank 1 and bank 2 simply refer to either side of the engine . Check your owner's manual or a service manual for a positive location of bank 1 and bank 2. Most commonly, bank 1 houses the front most cylinder on the engine cylinder 1, and bank 2 is the opposite side of the engine.
