U1249 Holden Td DTC Code

Holden Td Engine Specifications:

Engine Type :	Multi-Cylinder Engine
Cylinder Type :	W-Type Engine
Engine Air Intake Process :	Turbocharged Engine

Your Holden Td engine control system detects a problem, the computer stores the diagnostic trouble code U1249 in its memory. To figure out what is wrong with your vehicle you must first extract the U1249 DTC For Holden Td.

Another consequence of U1249 Holden Td 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.

U1249 Holden Td DTC Meaning

U	Network Code - Problem is climate control system, lighting, airbags, etc.
1	MFG - Manufacturer Specific
2	Computer And Auxiliary Outputs
4	Control Module Throttle Actuator Position Performance
9	A/C System High Pressure High Temperature

There are currently two main types of cylinder deactivation used today, depending on the type of engine. U1249 Holden Td code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed.