Do you have to replace both speed sensors on a Chrysler cirrus?

No, you don't *have* to replace both speed sensors on a Chrysler Cirrus if only one is faulty. The Cirrus typically has two speed sensors: one in the transmission and one in the rear differential (or sometimes in the ABS system). Replacing only the malfunctioning sensor is the correct and more economical approach. Replacing both is unnecessary unless both are independently diagnosed as faulty.