AutoCodes – Generic – P0A0F

P0A0F Code - Engine Failed to Start

Quick Answer

The HV control ECU detects this DTC and effects failâ€“safe control if the engine or transaxle gear has seized up, or foreign objects have been caught in either of them. Common causes include SFI system, Faulty Power management control ECU. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0A0F indicates Engine Failed to Start.
Common causes: Common causes include SFI system, Faulty Power management control ECU.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 40,387

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0A0F Description

The HV control ECU detects this DTC and effects failâ€“safe control if the engine or transaxle gear has seized up, or foreign objects have been caught in either of them.
If an engine malfunction occurs, an engine malfunction signal is sent from the ECM to the power management control ECU (HV CPU) . When the power management control ECU (HV CPU) receives this signal, it sets a DTC and performs fail-safe control.

OBDII Code P0A0F - Engine Failed to Start - AutoCodes.com — P0A0F Code - Engine Failed to Start

What does this mean?

What are the Possible Causes of the DTC P0A0F?

SFI system
Faulty Power management control ECU

How to Fix the DTC P0A0F?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0A0F code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

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Information for Specific Makes

P0A0F Hyundai — Engine Failed to Start
P0A0F KIA — Engine Failed to Start
P0A0F Lexus — Engine Failed to Start
P0A0F Toyota — Engine Failed to Start

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.