P0AAE: Battery inlet-air circuit low is expressed as a hot indicated value

P0AAE monitors the low-circuit end of the battery inlet-air temperature sensor. The GM table represents failure as inlet-air temperature above 95°C. That electrical label and temperature direction should be kept separate when interpreting a scanner's description.

The inlet row has its own conditions

The battery controller must be in run mode with the low-voltage supply between its specified limits, and the controller-performance fault must be inactive. The sample decision is 30 failures within 40 at 100ms intervals.

Unlike several module-temperature circuit-low rows, this inlet-air row does not add a requirement for another battery temperature to be below 70°C. Importing that condition from a neighboring sensor would misdescribe the documented monitor.

Distinguish inlet sensing from battery heating

Record the inlet-air parameter specifically, alongside its validity and related inlet-plausibility or circuit-high codes. A maximum-module temperature is a different measurement and cannot replace the inlet reading in the fault record.

The threshold alone does not prove that incoming cooling air physically exceeded 95°C or identify a blocked duct. It is evidence of the monitored input reaching its electrical-fault criterion. A qualified technician must use the actual sensor circuit and battery-cooling procedure to determine the cause. Pack-adjacent work still requires the prescribed high-voltage access precautions; this summary supplies no direct-power or live-probing test.

The inlet measurement concerns cooling air entering the battery system.

Source and applicability

GM 2010 10OBDG10 Hybrid Diagnostics, only the cited controller and monitor. These are historical calibration examples; individual vehicle, engine and hardware applicability is not established. GM PDF, page 237.