P05FD: VGT drive electronics report excessive temperature

The cited P05FD strategy monitors excessive temperature associated with the variable-geometry turbocharger DC motor. The failure quantity is specifically the H-bridge driver's hardware-reported temperature above 170°C.

Distinguish drive temperature from exhaust temperature

The generic title says boost-control temperature too high, but this row does not compare exhaust-gas temperature, compressor outlet temperature or engine coolant temperature. Applying the 170°C threshold to one of those other sensors would assess the wrong quantity.

The source mentions internal VGT motor faults as an example of a possible contributor. That example does not establish the cause of every thermal event or prove the turbocharger assembly must be replaced.

Conditions that make the result comparable

Cranking must have ended, relay supply must exceed 11 V and hardware error status must be determinate. The calibration-enabled test filters 240 failures among 300 samples on a 12.5 ms function task, with Type A, one-trip reporting.

Retain the operating context of the reported heating and confirm that any available temperature channel represents the drive electronics. A cool actuator after shutdown does not invalidate an earlier thermal finding. Verification should follow the correct service procedure to assess normal driver thermal behavior. The table supplies no direct-power test, thermal-protection bypass or universal replacement instruction for single- or two-stage turbocharger systems.

Source and applicability

2025 GM 25OBDG04B diagnostic parameter tables; the cited monitor only. Vehicle, engine and calibration applicability must be confirmed separately. These tables describe detection logic, not a complete repair procedure or a component replacement verdict. gm-2025-04b, PDF page 1226.