U2523 Volvo 240 DTC Code

Volvo 240 Engine Specifications:

Engine Type :	Multi-Cylinder Engine
Cylinder Type :	V-Type Engine
Engine Air Intake Process :	Supercharged Engine

Your Volvo 240 engine control system detects a problem, the computer stores the diagnostic trouble code U2523 in its memory. To figure out what is wrong with your vehicle you must first extract the U2523 DTC For Volvo 240.

Another consequence of U2523 Volvo 240 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.

U2523 Volvo 240 DTC Meaning

U	Network Code - Problem is climate control system, lighting, airbags, etc.
2	MFG - Manufacturer Specific
5	Auxiliary Emission Controls
2	Cruise Control Servo Indicates Low
3	TFP Valve Position Switch-Drive Without Drive Ratio

The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. U2523 Volvo 240 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.