what triggers code p0882. after repairing code 0420 and checking all ground points, and replacing tipm fuse block with a used one, the car still triggers code 0882 after driving 50 miles after reset.any info would help

Hello, You have to identify the power wire for the TCM. Test the power wire at the TCM for proper voltage. If it is good, you likely have a bad TCM. If proper power is not getting to the TCM, you must repair the circuit.