The problem on Saturday had to do with the gaseous helium pressure alarm on the spacecraft, officials said early Saturday.
The probe is created to plunge into the Sun's mysterious atmosphere, known as the corona, coming within 6.16 million kilometers of its surface during a seven-year mission.
The probe, which aims to give Nasa an up-close look at how our nearest and dearest star works, will travel at 430,000 miles an hour - faster than any spacecraft in history.
Through this mission, NASA is hoping to solve decades-old mysteries around what accelerates the solar winds that affect Earth and other planets.
The unmanned spacecraft's mission is to get closer than any human-made object ever to the center of our solar system, plunging into the Sun's atmosphere, known as the corona, during a seven-year mission.
The entire project cost R20.5-billion and will continue until 2025.
"We've been inside the orbit of Mercury and done wonderful things, but until you go and touch the sun, you can't answer these questions", Nicola Fox, mission project scientist, told CNN.
He proposed the existence of solar wind - a steady, supersonic stream of particles blasting off the sun - 60 years ago.
The car-sized probe will utilise Venus to try and achieve an orbit around the sun by helping to slow it down.
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These poorly understood solar outbursts could potentially wipe out power to millions of people.
The probe is guarded by an ultra-powerful heat shield that can endure unprecedented levels of heat, and radiation 500 times that experienced on Earth.
NASA's science mission chief, Thomas Zurbuchen, was thrilled not only with the launch, but Parker's presence.
More knowledge of solar wind and space storms will also help protect future deep space explorers as they journey toward the Moon or Mars.
NASA on Sunday blasted off a $1.5 billion spacecraft toward the Sun on a historic mission to protect the Earth by unveiling the mysteries of unsafe solar storms.
NASA said the mission to "touch the Sun" will provide scientists with vital new information about our solar system and beyond.
"We are ready. We have the ideal payload".
The delicate instrument comes equipped with an array of instruments and tools which will scan the Sun for solar winds and magnetic fields.
"We'll also be the fastest human-made object ever, travelling around the Sun at speeds of up to 690,000km/h (430,000mph) - NY to Tokyo in under a minute".
The probe, named after American solar astrophysicist Eugene Newman Parker, will have to survive hard heat and radiation conditions.