Issues with the electrical wiring Malfunctioning output shaft speed sensor Old transmission fluid However, along with the code also come car-related issues. They can include a couple of symptoms: ...

The sensor signal conditioner processes the sense element output nonidealities and transmits the signal to a controller. Figure 1 shows the general block diagram of this ecosystem. Figure 1: Block ...

Pickups may experience an intermittent loss of the transmission output speed sensor signal to the powertrain control module, potentially resulting in a temporary, unintended downshift into first gear.

The Problem: A problem with the output speed sensor on the vehicle’s transmission lead frame could cause the transmission controls to force a temporary downshift into 1st gear.