AutoCodes – Generic – P0094

P0094 Code - Fuel System Leak Detected Small Leak

Quick Answer

The Powertrain Control Module (PCM) monitors the fuel system. Common causes include Faulty fuel pump, Blocked fuel filter, Faulty fuel pressure solenoid. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0094 indicates Fuel System Leak Detected Small Leak.
Common causes: Common causes include Faulty fuel pump, Blocked fuel filter, Faulty fuel pressure solenoid.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 20,209

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0094 Description

The Powertrain Control Module (PCM) monitors the fuel system. The PCM sets the OBDII code when it detects a large fuel system leak.

OBDII Code P0094 - Fuel System Leak Detected Small Leak - AutoCodes.com — P0094 Code - Fuel System Leak Detected Small Leak

What does this mean?

What are the Possible Causes of the DTC P0094?

Faulty fuel pump
Blocked fuel filter
Faulty fuel pressure solenoid
Faulty Fuel injector

How to Fix the DTC P0094?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0094 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0094 code?

Need more information on how to fix the P0094 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0094 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0094 Code

1. What are the common symptoms of OBDII code P0094?

The common symptoms of OBDII code P0094, Fuel System Leak Detected Small Leak, include a noticeable fuel odor, decreased fuel efficiency, and potentially rough idling or engine misfires.

2. What are some possible causes of OBDII code P0094?

Possible causes of OBDII code P0094 include a loose fuel cap, damaged fuel lines, leaking fuel injectors, or a faulty fuel pressure sensor.

3. How serious is OBDII code P0094?

While OBDII code P0094 may not cause immediate harm to your vehicle, it can lead to increased fuel consumption and potentially more serious issues if left unresolved.

4. How can I diagnose the cause of OBDII code P0094?

To diagnose the cause of OBDII code P0094, you can start by checking the fuel cap for tightness, inspecting the fuel lines for any visible damage, and testing the fuel pressure sensor for proper function.

5. What are the repair options for OBDII code P0094?

Repair options for OBDII code P0094 include tightening or replacing the fuel cap, repairing or replacing damaged fuel lines, fixing any leaking fuel injectors, or replacing a faulty fuel pressure sensor.

6. Can I drive with OBDII code P0094?

It is generally not recommended to drive with OBDII code P0094 as it can lead to decreased fuel efficiency and potentially more serious fuel system issues if not addressed promptly.

7. How much does it cost to repair OBDII code P0094?

The cost to repair OBDII code P0094 can vary depending on the specific cause of the issue, but it may range from a simple DIY fix like tightening the fuel cap to more extensive repairs involving fuel system components.

8. Will OBDII code P0094 cause my check engine light to illuminate?

Yes, OBDII code P0094 will trigger your vehicle's check engine light to illuminate to alert you to a potential issue with the fuel system leak detected.

9. Can a mechanic reset OBDII code P0094?

A mechanic can reset OBDII code P0094 after diagnosing and repairing the underlying issue causing the fuel system leak detected small leak.

10. How can I prevent OBDII code P0094 from occurring in the future?

To prevent OBDII code P0094 from occurring in the future, make sure to always tighten your fuel cap securely, regularly inspect your fuel system for leaks or damage, and address any fuel system maintenance promptly.