Four problems related to check engine light on have been reported for the 2009 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Ford F-150 based on all problems reported for the 2009 F-150.
While in drive at idle speed the trucks rpm jumped to approximately 4000 rpm instantly . I had to push my foot brake as hard as I could and put shifter in neutral then it was ok for a while then this happened again several weeks later took to dealer no check engine light could not find a problem very dangerous situation.
Dropped off vehicle with Ford dealership service adviser and proceeded to waiting area. Vehicle had a steady yellow engine light indicating service is required. Five minutes later, loud engine racing noise, tires squealing and crash impact sound from service bay area. Knowing it was my truck, I went out to the service bay to see it slammed through the far stone wall, about 75 feet from the service desk. Hydraulic fluid was all over the floor, outside and inside of the truck. Service adviser was stunned and crawled out of vehicle claiming it suddenly accelerated and he could not put the vehicle into neutral or park as the engine raced at full rpm. Service adviser was sent to hospital. Ford service manager was concerned and agreed to check engine codes, he talked like he'd seen this happen before. All service engineers were concerned about spontaneous acceleration they all witnessed as the truck miraculously barreled through the service bays without hitting any of the workers. Later in the day, I returned to check status and everyone at dealership changed their story. They will not tell me why the truck accelerated like it did, but will not admit there was human error either.
No problems until about 60,000 miles. Then one day, while stopped, the truck suddenly died, the check engine light came on, and the gas gauge would indicated a quarter tank when the tank was actually full. All of this happened at the same time. I had two oxygen sensors replaced (about $400) to clear the check engine light and the fuel pump replaced (about $700) on the recommendation of the Ford service department to cure the gas gauge problem. While turning across oncoming traffic, the vehicle has died and was hard to steer. Oncoming cars had to brake rapidly as I have had a hard time steering with no power. This has now happened numerous times. The truck dies or runs very rough and nearly stalls almost every time I drive it more than a mile or so. There is no check engine code and the dealer stated it could not be duplicated when I took it in for evaluation. This has the potential for creating a dangerous situation. I would fix this issue if it could be identified.
The check engine light started going on and off periodically. After three visits to the dealer they determined that there are no mechanical problems. They researched and determined there is a computer program problem with the main computer that causes the light to go on. They told me that I would have to pay to get an update to the computer program that would correct this problem. It cost me three visits and a $85 bill to find out the problem is with their computer program. They know there is a problem with their program and they want the vehicle owner to pay over $200 to fix it. How do they figure that is the owner's fault?.