Q: Car turns off but turns back on when pulling key out of ignition.

asked by on January 17, 2018

When I turn off car it turns off. Then when I pull the key out of the ignition the engine revs up and turns back on. If I put key back in and turn to accessory mode then off it turns off. Then when automatic lights come on when car is off check engine light also comes on. The check engine light goes off once car is started. Also my code reader does not pick up and codes when the check engine light is on.

My car has 90000 miles.
My car has an automatic transmission.

Electrical components are not working Inspection $94.99 - $114.99 Get a Quote

This is an electrical problem and is caused by either a short circuit, a fault in the key sense feature (module) or, if equipped, could be caused by faults in the remote starter circuit which operates wirelessly. If you have an aftermarket remote starter system, that would be checked out first. To pinpoint the exact fault will require an electrical component/circuit diagnostic. If you request that diagnostic, the responding certified mechanic will resolve this. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car oil mixed with radiator fluid
Hi. Oil/coolant intermix is a bad sign. This means that coolant is leaking down through a cylinder into the crankcase. This usually indicates a blown head gasket or cracked cylinder head. The head gasket seals the engine combustion chambers as...
Car makes thudding noise and shudders at low speed
Your car seems to have what is called a "limited slip" rear end which controls the amount of power coming from the drive train to ensure that the power is evenly distributed to both wheels. The limited slip clutch packs...
Issue with the fuel pump. Car died and won't start.
Hello, first task is to extract the problem codes which are setting the Check Engine Light (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) on. This can make diagnosis and repair much faster and less expensive. I am confused by our comment that "have full power to...
There's a leak in my fuel pump, in between the fuel line and pump.
Hello and thank you for contacting YourMechanic. Pressurize the fuel system and check all of the lines for any fuel leaking. Then clean off the lines and use a flashlight to check for any pin holes or cracks on the...
Won't start, weak charge light, and is battery fully charged.
Hi there. The issue is with your battery. The battery may have the voltage, but the amperage is very low and causing the electrical system to not function properly. I recommend replacing your battery (https://www.yourmechanic.com/services/battery-replacement). If you need further assistance...
Wire under fusebox burned fuse melted 2003 Ford Focus
Hello - most often, wiring damage is caused by shorts caused when wiring insulation is damaged and cut or worn away. The big charging cable from the alternator to the battery (or the starter cable) has a huge capacity for...
My daughter's check engine light came on with a code of P1004 on a 09 Dodge Charger. We changed the short runner valve, the light
The short runner valve actuator that you replaced is just the electric motor that moves the short runner valve to its correct position. However, the problem is likely that the valve itself within the intake is sticking. Using an appropriate...
What would cause oil to blow everywhere in my truck.
Hello. I would need to know what kind of vehicle this is to be able to give you some specific information. Typically if a serious oil leak occurs all of a sudden, and if nothing was hit, then you may...
I have a 2009 Ford Focus it won't go into gear when I start it but it'll go into gear when the car is shut off what can it be
Hi There, It sounds like the clutch may not be disengaging properly where the pressure plate may not be pushed in completely by the hydraulic clutch system. You can try checking this by starting the vehicle with the clutch in...

Related articles

A Buyer’s Guide to the 2012 Dodge Durango
The The 2012 Dodge Durango is a more fuel efficient SUV yet still provides all of the room and power you need. The Durango can tow up to 7,400 pounds making it perfect for family outings and carrying lots of...
2012 Ford Focus vs. 2012 Mazda 3: Which One Should I Buy?
Compact sedans and hatchbacks provide a great ride on a budget, with the evolution from a stodgy, unattractive exterior (and interior!) to a more fully-featured trim set and exterior design. Driving enjoyment is improved throughout the class, which are known...
2012 Mazda 3 vs. 2012 Honda Civic: Which One Should I Buy?
Compact cars are well-known for their cost-effectiveness, value and affordability as well as their small stature. In general, they make great commuter cars and are especially good for first-time cars for kids or college students heading out for the first...