Transmission Hot Message

The IPC will display this message whenever a Class 2 serial data bus request is received from the PCM. This message indicates either the transmission has been hotter than 144°C (291°F) for more than 32 seconds or hotter than 130°C (266°F) for more than 15 minutes. The transmission must be less than 120°C (248°F) for more than 5 seconds to Clear this message.