Skip the auto shop - Our mechanics make house calls

Q: If a code saying that my fuel sensor switch is not working properly goes unfixed, can it cause other issues later on?

asked by on

My check engine light came on and I had it diagnosed at Discount Auto. It said that my fuel sensor switch needed replacing. My mechanic refused to replace it because by the time I got my car to him the check engine light was not on and he could not get a code. I have continued to have issues with my cars performance. Lately my car has not wanted to start and when it did it would move very slowly at first. Now I am having other issues with pressure or something building up and have blown off a hose leading to my reservoir tank. Can this be related and what should I do?
My car has an automatic transmission.

Hi. The fuel pressure sensor’s purpose is to relieve pressure in the fuel tank and the emissions system when it is needed to help control the pollutants the car puts out. The fuel pressure sensor being bad shouldn’t affect the drivability of the car. A bad fuel pressure sensor may cause the fuel economy to drop and cause the car to put out more pollutants than normal.

The other problems you are having are related to something else that is going wrong with the car. There could be some bad sensor on the engine, the coolant system could have a clog in it, or the water pump or radiator is going bad.

I suggest you have a certified technician, such as one from YourMechanic, come to your location to determine what exactly is wrong with your car and replace the fuel pressure sensor if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • If a code saying that my fuel sensor switch is not working properly goes unfixed, can it cause other issues later on?

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: P1292 and P0181 come on when I hit a bump

If these two codes keep coming up together, it sounds like there is probably a spot in the wiring harness that is shorting to ground. P1292 is for an injector and the P0181 is for a fuel temperature sensor, so...

Q: My truck will turn over but wont start. Its making a clicking noise and then shuts off, what should i do to fix it?

Hi there. Check the fuel pump relay and see if the relay has failed. If the relay is working fine, then check the fuel pump and see if its coming on when you turn on the key. If you are...

Q: Car shifting high when foot on gas pedal

Transmission sensors are usually just to measure vehicle speed and sometimes rpm. I would think that a hydraulic or mechanical  transmission issue would be a more likely cause considering the symptoms. I would first start by checking the transmission fluid...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.