Fault code P0A0F is called “Engine Failed to Start” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.
Technical description and explained code P0A0F
The P0A0F fault code is intended to be displayed exclusively on hybrid vehicles. Indicates that the Powertrain Control Module (PCM) has detected a fault that prevents the engine from starting.
Although this error is only displayed on hybrid vehicles, it applies to the main, gasoline engine. It means that there are conditions that make it impossible to start the engine.
Therefore, the cause of the error should be sought as in the normal gasoline internal combustion engine. And there can be many reasons, such as faulty spark plugs, dirty throttle, faulty injectors and so on.
Thus, when P0A0F malfunctions, the engine cannot start, for a very large number of reasons. But in many cases, this error will be accompanied by other codes. Which will help to narrow down the general area where the problem is present.
Symptoms of vehicle malfunctions
The main signal that an error P0A0F has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.
It can also be warning signs such as:
- The “Check engine” control lamp on the control panel will illuminate (the code will be stored as a fault).
- Additionally, there may be codes indicating a problem with a particular assembly or mechanism.
- Reduced vehicle performance.
- Increased fuel consumption.
- Complete failure to start the engine.
The severity of fault code P0A0F is high, as the fault is related to the vehicle’s engine start. The problem should be corrected as soon as possible.
Factors that can cause this error code
The error code P0A0F can mean that one or more of the following problems have occurred:
- Faulty spark plugs.
- Contaminated throttle valve.
- Faulty injectors.
- Any other causes affecting engine starting.
How to fix or reset OBD-2 code P0A0F
Some suggested steps for troubleshooting and fix the error code P0A0F:
- Connect an OBD-II scanner to the vehicle’s diagnostic connector and read all stored data and error codes.
- Clear the error codes from the computer memory and test-drive the vehicle to see if the code P0A0F appears again.
- If there are additional errors, correct them, they may be the cause of this code.
Diagnose and repair of problems
The first step in the P0A0F troubleshooting process is to review the Technical Service Bulletins (TSB). For known problems with a particular vehicle.
The advanced diagnostic steps are very vehicle specific. It may require, special equipment and knowledge to accurately perform the steps.
There are no specific tips on how to fix this malfunction, as there can be many reasons for the appearance of this code. But the main recommendations are related to the replacement of spark plugs, throttle cleaning, as well as injectors.
On which vehicles does this problem occur most frequently
Fault code P0A0F can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:
- Ford (Focus, Mondeo)
- Kia (Optima)
- Lexus (GS450h, RX400h)
- Mercedes-Benz (Sprinter)
- Toyota (Camry, Prius)
- Volvo
Fault code P0A0F can sometimes be found with other errors. The most common are the following: P0A0A, P0A0B, P0A0C, P0A0D, P0A0E.
