How much does it cost to fix P0174?

Typical repair cost is $75–$700.

P0174 — System Too Lean — Bank 2

Medium Severity · Fuel System

OBD-II code P0174 means your vehicle's ECU detected: System Too Lean — Bank 2. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

Drivable short-term but schedule a diagnosis soon. Prolonged driving can worsen the issue.

Typical Repair Cost

$75–$700

Parts + labor, national average

Severity

Medium

Schedule repair soon

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Common Causes of P0174

Vacuum leak on Bank 2 side
MAF sensor
Fuel delivery issue

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How to Fix Code P0174

Check intake gaskets on Bank 2 side

Clean MAF sensor

Test fuel injectors on Bank 2

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FAQ — Code P0174

What does OBD-II code P0174 mean?

P0174 means your vehicle's onboard computer detected: System Too Lean — Bank 2. This is a medium-severity code in the Fuel System category.

How much does it cost to fix code P0174?

Typical repair cost for P0174 is $75–$700 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.

Can I drive my car with code P0174?

Code P0174 is generally safe for short trips, but have it diagnosed soon to prevent the problem from worsening.

What are the most common causes of P0174?

The most common causes are: Vacuum leak on Bank 2 side, MAF sensor, Fuel delivery issue. Always start with the cheapest diagnosis step before replacing parts.

Will code P0174 clear itself?

Code P0174 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P0174 showing on your car?

Enter your VIN for a free vehicle-specific report — recalls, specs, and market value. No signup required.

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Related Fuel System Codes

P0087Fuel Rail/System Pressure Too Low P0088Fuel Rail/System Pressure Too High P0089Fuel Pressure Regulator Performance P0171System Too Lean — Bank...P0172System Too Rich — Bank...P0175System Too Rich — Bank...

OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.