Your Toyota Sport engine control system detects a problem, the computer stores the diagnostic trouble
code P0490 in its memory.
To figure out what is wrong with your vehicle you must first extract the P0490 DTC For Toyota Sport.
Another consequence of P0490 Toyota Sport 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.
P0490 Toyota Sport DTC Meaning
Powertrain Code - Problem is related engine, transmission and emissions systems.
SAE - Generic
Fuel And Air Metering (Injector Circuit Malfunctions Only)
TP Sensor Learn Not Complete
Transmission Engaged At High Throttle Angle
If your vehicle failed a P0490 Toyota Sport test and the P0490 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 P0490 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 P0490 DTC For Toyota Sport: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.