C2118 Buick 40 DTC Code | EngineDTC.com

Buick 40 Engine Specifications:

Engine Type :	Multi-Cylinder Engine
Cylinder Type :	Opposite Piston Engine
Engine Air Intake Process :	Naturally Aspirated

Your Buick 40 engine control system detects a problem, the computer stores the diagnostic trouble code C2118 in its memory. To figure out what is wrong with your vehicle you must first extract the C2118 DTC For Buick 40.

Another consequence of C2118 Buick 40 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.

C2118 Buick 40 DTC Meaning

C	Chassis Code - Problem is controller area network wiring bus and modules.
2	MFG - Manufacturer Specific
1	Fuel And Air Metering
1	IC Circuit High Voltage
8	Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

If your C2118 Buick 40 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 C2118 and engine control unit are in charge of monitoring a bunch of different C2118 DTC For Buick 40, and if they get a reading that's a little out of whack, up pops the check engine light.