Powertrain, generic · Hybrid propulsion

P0AEE Drive Motor Inverter Temperature Sensor A Circuit Range/Performance

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modePossible

P0AEE checks whether inverter temperature sensor A reads sensibly. GM's 2016 to 2019 tables compare it after a cold soak with an average temperature of the vehicle; more than 20 °C apart sets Type B, two trips. The 2011 Volt compares it with the other power electronics sensors (20 °C, Type A), the 2013 two-mode trucks after 360 minutes off (15 °C), eAssist with module and MGU temperatures (20 °C). GM bulletin PIC6303A notes that on Volt, Malibu and LaCrosse with 5ET50 the code alone triggers no remedy; the inverter is only replaced with P0AC4. Audi fixes P0AEE00 on Q5 and A7 e quattro by software, and Honda lists it among inverter faults of the 2012-15 Civic Hybrid with extended warranty.

Likely causes

Controller software error (Audi Q5/A7 e quattro bulletin)

Inverter temperature sensor A drifting out of tolerance

Failing power inverter module (e.g. Honda MPI solder joints)

Uneven inverter cooling after soak

Symptoms

Malfunction indicator lamp, often without drivability change
Drive system fault warning (Audi)
Vehicle may not start in hybrid mode

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€100–4,000

Time0.5–6 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

drive motor inverter temp sensor ahybrid control modulewiring harness

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com.