Symptoms of a Bad or Failing Evaporative Emission Control Canister

The smell of gasoline is difficult to miss, and even more difficult to ignore once you’ve smelled it. It is caustic and burns the nose, and can be very dangerous if inhaled and cause nausea, headaches and breathing problems. The amount of fuel vapors that can escape from a vehicle are strictly regulated, and the evaporative emission control canister helps keep everything working with valves, hoses, charcoal canister as well as a sealed gas cap.

Fuel is going to evaporate into a vapor, and that vapor is stored in the charcoal canister for later use in the engine as an important part of the air/fuel mixture. Particulates can accumulate on the emission control canister and wreak havoc with the valves and solenoids, even potentially cracking the charcoal canister itself. While a cracked or dirty canister is not a reason to be immediately concerned, the fact that fuel or fuel fumes can leak out is a big problem and needs to be addressed immediately.

1. Check Engine Light is on

The Check Engine Light can go on for dozens of different reasons, but if you see that particular light in combination with the strong odor of gasoline fumes then it’s a possibility that your evaporative emission control canister is the problem.

2. Raw fuel smell

If you’re smelling raw fuel, and you’re standing near the back of your vehicle, then it’s a possibility that this emissions-important part is failing and allowing fuel to escape from your gas tank.

3. Collapsed or leaking fuel tank

If the evaporative emission control canister undergoes a catastrophic failure, the gas tank can actually collapse – if the car has a solid-type gas cap. If there is a whooshing sound when the cap is removed, suspect the problem is venting-related. No maintenance schedule exists for this particular part, but the canister can easily become clogged or damaged and begin to leak. If that happens, be sure to consult a mechanic at your earliest convenience.

YourMechanic makes getting repairs to the evaporative emission control canister easy, since our mobile mechanics will come to your home or office to diagnose and fix your car.


Next Step

Schedule Exhaust and Emission System Inspection

The most popular service booked by readers of this article is Exhaust and Emission System Inspection. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Exhaust and Emission System Inspection reviews

Excellent Rating

(4)

Rating Summary
3
0
0
0
1
3
0
0
0
1

Anthony

29 years of experience
114 reviews
Anthony
29 years of experience
Hyundai Sonata L4-2.4L - Exhaust and Emission System - Moriches, New York
Anthony was very knowledgeable in diagnosing the problem with my car. explained everything that needed to be done in terms that I could understand. I would use this service again.

MICHAEL

34 years of experience
184 reviews
MICHAEL
34 years of experience
Mercury Mountaineer V6-4.0L - Exhaust and Emission System - Philadelphia, Pennsylvania
Did everything he could to track down a emissions code, after all recommended to replace a bad PCM.

Pedro

23 years of experience
35 reviews
Pedro
23 years of experience
Infiniti Q60 V6-3.0L Turbo - Exhaust and Emission System - Woodland Hills, California
Very professional and honest. Was fortunate to have him be the one to show up. Thank you Pedro!

Stefan

18 years of experience
367 reviews
Stefan
18 years of experience
BMW 530i L6-3.0L - Spark Plugs - San Ramon, California
Car runs great after replacing 6 ignition coils and 6 spark plugs. Stefan was very meticulous in his work and worked very efficiently.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

P0732 OBD-II Trouble Code: Gear 2 Incorrect Ratio
P0732 code identifies an issue with the vehicles automatic transmission often due too low transmission fluid or broken/faulty PCM.
P0647 OBD-II Trouble Code: A/C Clutch Relay Control Circuit High
P0647 means that the A/C clutch relay control circuit is malfunctioning due to a faulty control relay, compressor driver, damaged wiring components.
B2101 OBD-II Trouble Code: Head Rest Switch Circuit Failure
B2101 trouble code means there's a malfunction with the power headrest switch circuit, caused by faulty components in the headrest switch or headrest.

Related questions

Slight knocking while driving
If your car has been leaking oil for an extended period and you hear knocking, it's possible that an engine bearing has either spun, or is about to spin in its bore. After fixing the oil leak (https://www.yourmechanic.com/services/oil-fluid-leak-inspection), I would...
Car stalling when idling
The fuel leak needs to be identified and fixed before you drive it due to the fire hazard. The other problems can be checked after the fuel leak is fixed. The fuel leak may be the whole issue or the...
Car throws code: P0301 even after I have changed spark plugs, fuel injector, fuel filter, ignition coils.
The engine intake near cylinder one should be checked when first started to see if there is any vacuum leaks at intake gasket (https://www.yourmechanic.com/services/intake-manifold-gaskets-replacement) or the injector O-ring. If no vacuum leaks are found then you may be having a...

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