Q: will a defective oil pressure sensing system prevent engine starting even if it turns over

asked by on

i thought it had run out of fuel put fuel init would not start. changed filters proceeded to purge air as per instructions. fuel pump is working. as i cranked motor over it seemed to want start but would not.i observed there was no oil pressure indicated at cranking speed.then im told by my friend the oil pressure gauge and fuel gauge had been sporaticaly not working. realizing there would be engine protection for no oil pressure.my question is would a bad oil sensor or something in that protection system prevent engine from starting.

My car has 150000 miles.
My car has an automatic transmission.

Hello. If the oil pressure sensor was bad it would not keep the vehicle from starting. If there is no oil pressure on the gauge when starting it then there is a supply issue. Most of the time this is an issue with the low pressure oil pump.

I usually start the diagnostic process by removing the pressure relief valve for the pump to make sure it is not sticking. If it is then it can be replaced and that may fix the issue. If not then it may need the pump.

If you need to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your starting issue firsthand.

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. will a defective oil pressure sensing system prevent engine starting even if it turns over

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: Car slightly jerks, stalls, and then restarts

Hello. A faulty coil pack is likely the cause of the issue you are having. A less likely cause could be a clogged fuel filter or fouled spark plugs. I suggest that you have a technician inspect your coil pack...

Q: Air conditioner clutch air gap inconsistent

There are a few things that cause the compressor to cycle; the clutch is not usually one of them. They typically work, or do not work. You can backfeed a test light into the circuit to see if it is...

Q: Could the low oil level sensor be accidentally knocked off during an oil change on a es330 Lexus 2005. My engine recently seized up.

Hi there. Look all around the engine and around the oil pan and filter. Look for any signs of oil leakage. If there is no oil leakage, then check the engine oil level. If the oil level is full, then...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...