The P0174 code in an engine indicates that your car has detected a lean fuel mixture. It means too much air and insufficient fuel, causing engine misfires or damage to crucial components. However, you can find out how to fix the P0174 code by calling our agents. Our helpline is 24*7 and is available for your service.
What is Code P0174?
The P0174 code is a diagnostic trouble code that indicates the system is too lean. This means that the engine control module has detected that the air-fuel mixture on bank 2 of the engine is too lean.
Common Causes Of Car Indicates Code P0174
Vacuum Leaks
Unmetered air entering the intake system can cause the engine to run lean, such as:
- Faulty intake manifold gaskets
- Cracked or disconnected vacuum hoses
- Leaks around the throttle body or PCV valve
Mass Airflow Sensor Issues
A dirty or malfunctioning MAF sensor may provide incorrect air flow readings, causing the ECM to lean out the mixture.
Fuel System Issues
Insufficient fuel delivery can lead to a lean condition because of the clogged fuel filter, weak or failing fuel pump, or clogged or dirty fuel injectors.
Exhaust System Leaks
Leaks near the oxygen sensor can cause incorrect readings, leading to a lean mixture.
Oxygen Sensor Faults
A failing upstream O2 sensor may provide inaccurate data, causing the ECM to adjust the air-fuel ratio incorrectly.
Engine Computer Software Issues
A malfunction or outdated programming in the ECM can cause erroneous lean condition detection.
Low Fuel Pressure
This can be due to a failing fuel pump, pressure regulator, or restricted fuel lines.
Symptoms of P0174 Code
- You must check if the engine light is illuminated.
- You might experience poor engine performance.
- Rough idle.
- When you face issues like decreased fuel efficiency,
How to Fix P0174 Code?
If you have a Chevy and your car indicates the P0174 code, there are various ways to fix it. However, you can call our agents for complete guidance regarding issues with the P0174 code in Ford or any other model.
- Use a smoke test or carburetor cleaner to locate leaks around the intake system.
- A simple cleaning with MAF cleaner spray can often fix issues caused by dirt buildup.
- Check fuel pressure with a gauge to ensure it is within specification.
- Clean or replace clogged fuel injectors.
- Inspect for leaks near the O2 sensor and repair any found.
- Use a scanner to monitor sensor data and replace faulty sensors.
- If all else fails, check for ECM updates or consider a replacement if faulty.
How Much Does it Cost to Fix Code P0174?
The cost to diagnose and repair a P0174 code in the U.S. varies based on the underlying cause and labor rates.
- Repairing vacuum leaks, like replacing faulty intake manifold gaskets or damaged vacuum hoses, can cost between $150 and $200.
- A new MAF sensor costs between $150 and $300, with labor adding around $50 to $100.
- Replacing an oxygen sensor can cost between $200 and $300, including parts and labor.
- Addressing issues like a clogged fuel filter or weak fuel pump can cost between $200 and $800, depending on the parts and labor.
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Frequently Asked Questions
When you see a code P0174 in your car computer, it is advised that you must not drive and immediately should take it to the mechanic. However, if you are stuck on a highway, you can call our agent, and they will guide you on call.
The P0174 code issue in your car can be caused by a malfunctioning MAF sensor, which can be caused by dirt or part failure. You can book our services to clear your air filters.
Yes, a dirty air filter can create a lean condition, which is not caused by its own. It must be due to the unfiltered air released to the MAF sensor that can cause a lean code due to dirt. You must call our professionals to make it work properly.
The P0174 is unlikely to clean itself, as small vacuum leaks and blockages can cause trouble. In cases like these, you must ask for help, so call our agents soon if you are stuck in a particular situation.
