Your Daewoo Nubira engine control system detects a problem, the computer stores the diagnostic trouble
code C3968 in its memory.
To figure out what is wrong with your vehicle you must first extract the C3968 DTC For Daewoo Nubira.
Another consequence of C3968 Daewoo Nubira 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.
C3968 Daewoo Nubira DTC Meaning
Chassis Code - Problem is controller area network wiring bus and modules.
SAE - Generic
Vehicle Speed Output Circuit
Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit
If your vehicle failed a C3968 Daewoo Nubira test and the C3968 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 C3968 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 C3968 DTC For Daewoo Nubira: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.