ZF North America, which supplied nine-speed automatics to Fiat Chrysler (FCA), Honda, and Land Rover,  said that they had made at least a half million sensors which can push their nine-speed transmissions shift into neutral without warning.

ZF nine speed 9

The problem was discovered and originally reported by FCA; ZF  said that the recall would be handled by its automaker customers.

The fault lies in a connector on a wiring harness which was not crimped properly, resulting in a mixed signal that tells the transmission to move to neutral. FCA has already recalled well over 300,000 vehicles with this problem, which ZF claims can be fixed with a software update though it’s hardware related. So far, there have been no reported injuries.