P0A2B on Mazda
Drive Motor "A" Temperature Sensor Circuit Range/Performance
P0A2B on Mazda vehicles indicates drive motor "a" temperature sensor circuit range/performance. Au7o has documented this code across 1 Mazda model — most commonly on CX-90. The drive motor 'A' temperature sensor signal is implausible or out of expected range for operating conditions.
Common Causes of P0A2B
- •Drifting/aging temperature sensor
- •High-resistance connection
- •Cooling system issue
- •Control module fault
P0A2B on Mazda by Model
Mazda CX-90(1 issue)
- 48V MHEV Battery Cell Imbalance — Engine Malfunction Light, Loss of Hybrid Assist and Fail-Safe Mode (DTC P0DAB)2024-2025
On 3.3 Turbo / Turbo S mild-hybrid (MHEV) CX-90s, one or more of the 12 cells in the 48-volt MHEV battery can become voltage-imbalanced, storing DTC P0DAB (cell voltage variation). The vehicle illuminates the engine malfunction warning, drops to an engine-only fail-safe mode, and disables M Hybrid Boost, i-stop, and regenerative braking; CX-90 forum owners report dealers calling the car unsafe to drive. This 48V MHEV battery fault is distinct from the inverter/PCM software loss-of-power recalls (7024J / 24V815 / 24V817).
Looking for P0A2B on a different make?
View P0A2B across all makes →Frequently Asked Questions
What does P0A2B mean on Mazda?▼
P0A2B stands for "Drive Motor "A" Temperature Sensor Circuit Range/Performance." The drive motor 'A' temperature sensor signal is implausible or out of expected range for operating conditions. On Mazda specifically, this code is documented across 1 model.
What causes P0A2B on Mazda vehicles?▼
Common causes on Mazda: Drifting/aging temperature sensor, High-resistance connection, Cooling system issue, Control module fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0A2B on a Mazda?▼
Repair costs vary widely depending on the root cause and specific Mazda model.
Which Mazda models have P0A2B documented?▼
Au7o has documented P0A2B on 1 Mazda model: CX-90.