U2989 Audi Variant DTC Code

Audi Variant Engine Specifications:

Engine Type :	Single Cylinder Engine
Cylinder Type :	Opposite Piston Engine
Engine Air Intake Process :	Turbocharged Engine

Your Audi Variant engine control system detects a problem, the computer stores the diagnostic trouble code U2989 in its memory. To figure out what is wrong with your vehicle you must first extract the U2989 DTC For Audi Variant.

Another consequence of U2989 Audi Variant 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.

U2989 Audi Variant DTC Meaning

U	Network Code - Problem is climate control system, lighting, airbags, etc.
2	MFG - Manufacturer Specific
9	Transmission
8	Crankshaft Position Sensor Circuit Performance
9	A/C System High Pressure High Temperature

If your vehicle failed a U2989 Audi Variant test and the U2989 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses U2989 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look U2989 DTC For Audi Variant: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.