U0991 DTC For Ford Expedition
Ford Expedition Engine Specifications:
| Engine Type : | Multi-Cylinder Engine |
| Cylinder Type : | Opposite Piston Engine |
| Engine Air Intake Process : | Turbocharged Engine |
Your Ford Expedition engine control system detects a problem, the computer stores the diagnostic trouble
code U0991 in its memory.
To figure out what is wrong with your vehicle you must first extract the U0991 DTC For Ford Expedition.
Another consequence of U0991 Ford Expedition engine overheating may be a blown head gasket. Heat makes aluminum swell almost three times faster than cast iron. Thermal stress can distort the head and make it swell in areas that are hottest like those between exhaust valves in adjoining cylinders, and areas that have restricted coolant flow like the narrow area that separates the cylinders. The typical aluminum head swells most in the middle, which can crush the head gasket if the head gets too hot. This will usually cause the head gasket to leak compression between adjacent cylinders, or leak coolant into the cylinders.
U0991 Ford Expedition DTC Meaning
| U |
Network Code - Problem is climate control system, lighting, airbags, etc. |
| 0 |
SAE - Generic |
| 9 |
Transmission |
| 9 |
TP Sensor Learn Not Complete |
| 1 |
PCM Stack Overrun |
If your U0991 Ford Expedition check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U0991 and engine control unit are in charge of monitoring a bunch of different U0991 DTC For Ford Expedition, and if they get a reading that's a little out of whack, up pops the check engine light.
You can also check other Ford car models :
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The listed Ford models will give information about U0991 DTC.
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