P0A0F on Mazda
Engine Failed to Start
P0A0F on Mazda vehicles indicates engine failed to start. Au7o has documented this code across 1 Mazda model — most commonly on CX-60. This is a hybrid-vehicle code that sets when the hybrid control system commanded the gasoline engine to start but the engine failed to start within the expected number of attempts or time. In a hybrid, the electric motor/generator typically cranks the engine, and sensors confirm whether it actually fired and ran; when it doesn't, the controller sets this code and may limit driving. It generally points to an engine-side problem (no spark, fuel, or compression) or to the hybrid system being unable to crank it properly. The cause can range from a simple stall condition to a more serious engine or hybrid component fault.
Common Causes of P0A0F
- •Engine running out of fuel (sometimes despite the gauge)
- •Weak or failing high-voltage hybrid battery
- •Faulty crankshaft position sensor
- •Ignition or fuel system fault preventing the engine from firing
- •Mechanical engine or transaxle problem (seizure or binding)
- •Wiring or connector fault in the engine/hybrid control circuit
- •Faulty hybrid (HV) control ECU or engine control module
P0A0F on Mazda by Model
Mazda CX-60(1 issue)
- Hybrid System Malfunction warning / engine fails to restart from i-stop (Recall AR058A / 7024-type)2022-2024
Due to faulty software in the Powertrain Control Module (PCM) and Battery Energy Control Module (BECM), the engine may fail to automatically restart after auto stop-start (i-stop), illuminating the engine warning light and a 'Hybrid System Malfunction' message and potentially stalling the vehicle. In worst cases the car can lose EV drive and certain safety systems. The same software fault can also misfire other functions (windscreen defroster, seat-belt reminder, 360° camera).
Looking for P0A0F on a different make?
View P0A0F across all makes →Frequently Asked Questions
What does P0A0F mean on Mazda?▼
P0A0F stands for "Engine Failed to Start." This is a hybrid-vehicle code that sets when the hybrid control system commanded the gasoline engine to start but the engine failed to start within the expected number of attempts or time. In a hybrid, the electric motor/generator typically cranks the engine, and sensors confirm whether it actually fired and ran; when it doesn't, the controller sets this code and may limit driving. It generally points to an engine-side problem (no spark, fuel, or compression) or to the hybrid system being unable to crank it properly. The cause can range from a simple stall condition to a more serious engine or hybrid component fault. On Mazda specifically, this code is documented across 1 model.
What causes P0A0F on Mazda vehicles?▼
Common causes on Mazda: Engine running out of fuel (sometimes despite the gauge), Weak or failing high-voltage hybrid battery, Faulty crankshaft position sensor, Ignition or fuel system fault preventing the engine from firing, Mechanical engine or transaxle problem (seizure or binding). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0A0F on a Mazda?▼
Repair costs vary widely depending on the root cause and specific Mazda model.
Which Mazda models have P0A0F documented?▼
Au7o has documented P0A0F on 1 Mazda model: CX-60.