Q: Difficulty starting up after filling the gas tank

asked by on

The car has no issue until I fill the gas tank. After that, it gets difficult to start it up. Also the dashboard shows the service engine light on. As there was no power to the module, I wasn't able to check the service engine warning. Why is this happening?

Hello there. It sounds like you have a few things going on. If there is no power to the DLC connector, then the code readers are not able to read codes stored in the ECU. The most common cause of this is a wiring issue or the DLC connector fuse. Once this is resolved, it may give a better picture of any codes related to the fuel issue.

For the vehicle being hard to start, the most likely cause would be a fuel pump, vent solenoid, fuel filter, or charcoal canister. A qualified technician, such as one from YourMechanic, will be able to diagnose the starting fault and perform any repairs required.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Difficulty starting up after filling the gas tank

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Will I need to buy a new transmission?

A possible reason the car is not shifting well now is the transmission fluid is at the wrong level, in addition to the transmission fluid being contaminated with engine oil. First, check the level and see if the level is...

Q: Will they test the alternator to make sure it needs to be replaced?

Hi There, It sounds like you may potentially have a faulty voltage regulator or alternator. When the voltage regulator is not working properly, this may result in the alternator allowing too much power to be delivered to the battery resulting...

Q: Truck sputtering while driving.

Hi there. When the fuel pump was replaced they would have had the tank opened up and should have noticed the water at that time and cleaned it out. If there is indeed water in the fuel then the tank...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.