Generic
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Engine Speed Input Circuit

GM
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Engine Speed Input Circuit Low Input (4L30-E Transmission)
Cause:
    Engine running, Transmission not in Park, Reverse or Neutral, throttle position more than 12%, Transmission output speed more than 1024 rpm, then the PCM detected that the Transmission output speed to the TCM was less than 122 RPM for 4.0 seconds.

Nissan
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Engine speed (RPM) - incorrect voltage signal ECM to TCM
Cause:
    Wiring, RPM sensor, TCM, ECM