P0093 OBD-II Trouble Code: Fuel System Leak Detected Large Leak

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0093 code

P0093 is a diagnostic trouble code (DTC) for "Fuel System Leak Detected Large Leak". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0093 DIAGNOSTIC Get a fair and transparent estimate upfront

P0093 code definition

Fuel System Leak Detected Large Leak

What the P0093 Code Means

A code exists for a large leak, small leak, and very small leak. There is a range of fuel leakage programmed into the Powertrain Control Module (PCM) by the manufacturer to determine which code will be stored based on the amount of leakage.

What are the causes of the P0093 code?

All of these issues could trigger a large fuel leak code:

  • Leaks from the fuel tank due to vehicle damage
  • Leaks from the fuel lines due to rust
  • Leaks from the fuel filter due to rust or improper installation
  • Leaks from the injectors due to faulty seals
  • Leaks from any fuel system related hoses due to cracks in the rubber

What are the symptoms of the P0093 code?

  • Running out of fuel at a very fast rate

  • Extremely poor fuel economy

  • The risk of a fire

  • Fuel pressure decrease (could cause the engine to run poorly, further decreasing fuel economy)

How does a mechanic diagnose the P0093 code?

  • The mechanic will start by visually inspecting the fuel system, searching primarily for the leak. Since the leak is considered a large leak, it should be fairly easy to locate.

  • Once the source of the fuel leak has been found, the mechanic will repair or replace the part that is causing the large fuel leak.

Common mistakes when diagnosing the P0093 code.

Considering that the issue at hand is a large fuel leak, it would be quite difficult to make a mistake during diagnosis. This issue is as simple as locating the fuel leak and having it repaired.

How serious is the P0093 code?

The P0093 code is very serious. Having this code stored in your Powertrain Control Module can be a safety issue. With this code in the system, it is a safety hazard because a fire can be caused by this. It is very important to have the fuel leak located and repaired as soon as possible.

What repairs can fix the P0093 code?

Any part of the fuel system can cause this code. Some of the parts that could be replaced to repair this issue would include:

Additional comments regarding the P0093 code.

It is not advisable to drive the vehicle very much with a P0093 code stored in the PCM. A large fuel leak is one of the most major safety concerns that a vehicle could possibly have. Someone driving by who tosses a cigarette out the window could be oblivious to your large fuel leak and cause personal injury or death.

Need help with a P0093 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
P0093
trouble codes

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0093 code.

SCHEDULE P0093 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(6,295)

Rating Summary
5,825
224
52
35
159
5,825
224
52
35
159

JOHNNY

33 years of experience
96 reviews
JOHNNY
33 years of experience
BMW 325Ci - Check Engine Light is on - Sacramento, California
He was great explained everything to me and have now booked him for another appointment. Thanks johnny.

Ronald

41 years of experience
93 reviews
Ronald
41 years of experience
Mercedes-Benz C300 - Check Engine Light is on - Spring, Texas
Mister Ron was very nice and took time out to explain any concerns I might have about my car. He also made sure he communicated with me when he was on his way, once he was outside, and when we was done working on my car. I appreciate that considering I have a newborn that I had to look after.

Ronald

41 years of experience
93 reviews
Ronald
41 years of experience
Ram 1500 - Check Engine Light is on - Spring, Texas
Extremely satisfied with the service, he was able to come out and diagnose almost immediately. We purchased the parts, he came back installed them and been running great since. Would definitely recommend him and will not hesitate to call again if needed.

Scott

36 years of experience
802 reviews
Scott
36 years of experience
Dodge Neon - Check Engine Light is on - Tempe, Arizona
I truly enjoy Scott as he has done work for me in the past. Scott is very friendly, knowledgeable, and a true professional! I highly recommend him.


More related articles

P2729 OBD-II Trouble Code: Pressure Control Solenoid E Control Circuit Low
P2729 means a solenoid has malfunctioned due to a failing transmission, faulty sensors or solenoids, low fluid levels or electrical issues
P0118 OBD-II Trouble Code: Engine Coolant Temperature (ECT) Sensor Circuit High Open Problem
P0118 code definition Engine Coolant Temperature (ECT) sensor circuit high open problem What the P0118 code means P0118 is the OBD-II generic...
P0453 OBD-II Trouble Code: Evaporative Emission Control Pressure Sensor High Input
P0453 code means that a reading from the engine’s evaporative pressure sensor is higher than normal due to fuel tank vapor leaks into the system.

Related questions

Had p0715 code replaced input speed sensor cut engine light off but in 2 mile it still threw code p0715 again

Hi. There could be a problem internally were the speed sensor is reading making it still throw the code. There also could be a problem with the wiring harness or connector going to the speed sensors. The wiring could have...

Car will not rev or accelerate in Drive.

Hi there. Your vehicle does have the CVT transmission in it and color varies by brand of CVT fluid used. The maintenance interval for that transmission is 60,000 miles and should be kept regularly to prevent know CVT transmission failures....

Transmission shift solenoids

Hi there, thanks for writing in. Your particular car is very prone to complete transmission failure, so I would not personally attempt to make repairs to the transmission, as it likely won't fix the problem, or may act simply as...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com