Skip the auto shop - Our mechanics make house calls

Q: Oil pressure light and the engine's max speed is 4000 rpm. After 2 days the car isn't starting anymore.

asked by on

Car isn't starting after 2 days on a check on a scanner ( oil pressure sensor + camshaft sensor)

My car has 80000 miles.
My car has an automatic transmission.

A: You have several problems and this makes th...

You have several problems and this makes things considerably more confusing. Jetta’s are known for having challenges with their oil pressure light switches. The important thing to determine is that your motor has good oil pressure. The surest way to determine an oiling problem is by listening to the motor. If the oil pressure is indeed to low, the motor will rattle like a sowing machine. If this is the case and you have driven it for two days, the odds are the motor will need to be replaced. So if this is the case, you have bigger problems than the oil pressure sensor and the camshaft sensor.

If the motor did not exhibit sounds that indicate a lack of oil pressure, then it is just a problem with the sending unit system on your GTI. But of course, your car is not running at this time, so oil pressure is irrelevant until we get it running again. The camshaft sensor could certainly cause a no start condition. So if you have a code for a camshaft sensor, I would inspect the wiring harness to the sensor, look at the scan tool data for the camshaft and crank sensors to see if one or both is not registering. If the harness looks good, and there is a code for the camshaft sensor, I would replace it.

When there is a camshaft sensor code, it is a good idea to make sure the timing belt is intact. The replacement mileage for your GTI is 110,000 miles. So it technically isn’t due, but that doesn’t mean something hasn’t caused it to fail. If your were not aware, the camshaft sensor is there to monitor the camshaft position relative to the crankshaft. The crank and the cam are timed by the timing chain. So if it has a problem, a camshaft code could be set. In the future please include the codes. This is valuable information to help us get a better idea of what is going on with your car.

A timing chain system is very complicated, I recommend booking and appointment with one of our experienced technician who can help you diagnose your no start symptoms at your home.

You will need to get the car running again to find out if you have an oil pressure problem or if it is just the oil pressure sensor.

Good luck!

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!

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: Have new fuel pump but 2002 Saab 9-3 is stuttering and dies while drivjng

Hello, thank you for writing in. If you have reason to believe that the issue is fuel related, start by testing the fuel pressure at the engine. This can be done with an in-line gauge, and is relatively easy to...

Q: It cranks will not start

Hi there. If this started right after these parts were replaced then it may be a defective crank sensor, but I would definitely look at the work that was done to replace the heater core. It is possible that something...

Q: Loses power 60 mph

Hi! I believe your problems are unrelated and not caused by one another. I think it's more so awkward timing that both present problems than anything else. You may be in need of a tune-up. I suggest that you have...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...