2002 Dodge Grand Caravan 3.3L P0720 P0700 P1790 Check Engine Light and Speedometer Malfunction
My 2002 Dodge Grand Caravan with a 3.3L engine has recently started displaying multiple diagnostic trouble codes: P0720, P0700, and P1790. The Check Engine light is on, and when shifting into gear, the speedometer becomes erratic and inaccurate. This issue began suddenly and affects both driving accuracy and vehicle safety. I suspect a problem with the transmission control system or output speed sensor.
Inspect the output speed sensor as it is a common cause of P0720, P0700, and P1790 codes in 2002 Dodge Grand Caravan models with 3.3L engines.