Guru Chandal Dosha forms when Jupiter is conjunct or aspected by Rahu. It corrupts one's wisdom, ethics, and can lead a person toward false teachers or immoral paths.
Jupiter (Guru) represents divine wisdom, morality, wealth, and higher learning. Rahu represents obsession, illusion, rule-breaking, and materialism. When these two collide, Rahu's smoke clouds Jupiter's pure light. The individual might possess immense intelligence but may use it for manipulative or purely materialistic ends. They might struggle to respect traditional teachers or authority figures, or ironically, might fall prey to fraudulent gurus. The core lesson of this dosha is the purification of the intellect. Healing involves anchoring oneself to timeless, incorruptible wisdom and avoiding ethical shortcuts. Devotion to Lord Vishnu, the preserver of cosmic order (Dharma), helps clear the illusions cast by Rahu.
Guru Chandal Dosha's severity depends heavily on Jupiter's overall strength in the chart. If Jupiter is exalted or in its own sign, the Rahu influence is weaker. A learned Jyotishi should assess the full chart before concluding its strength.