How do you correct p0780 on Geo Metro?

To correct the P0780 code on a Geo Metro, which indicates a transmission problem, start by checking the Transmission Fluid level and condition, as low or dirty fluid can cause shifting issues. If the fluid is fine, inspect the transmission for any signs of leaks or damage. Next, examine the transmission control module (TCM) and wiring for faults, and consider scanning for additional diagnostic codes. If necessary, consult a professional mechanic for more in-depth diagnostics and repairs.