The Hybrid Powertrain Control Module (HPCM) software may shut down the hybrid system and the engine under certain conditions, causing a loss of drive power.

The powertrain control module isn't the only computer that you can find on contemporary cars, but it is the primary computer that controls most systems and functions for vehicles that utilize a PCM.

One of the biggest car recalls of 2025 was announced late last month as Nissan sorts out an engine failure risk to more than 440,000 of its vehicles.