2016 Subaru Outback Engine Is Stalling

Common Causes of Engine Stalling in Your 2016 Subaru Outback and How to Resolve Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Fuel System
0%
15% chance it's the
Air Intake System
0%
55% chance it's
Something else
The most common reasons a 2016 Subaru Outback engine is stalling are the fuel system, the air intake system, or the ignition system.
  • Fuel System: A clogged fuel filter or failing fuel pump can restrict fuel flow, resulting in poor engine performance and starting issues.
  • Air Intake System: A dirty or damaged air filter or a malfunctioning mass airflow sensor can restrict airflow, leading to reduced engine performance and efficiency.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2016 Subaru Outback engine is stalling?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What diagnostic steps should be taken to address the stalling issue in a 2016 Subaru Outback?

When addressing the stalling issue in a 2016 Subaru Outback, it's essential to adopt a systematic diagnostic approach that begins with the simplest checks before progressing to more complex assessments. Start by using an OBD-II scanner to identify any error codes, as these can provide immediate insights into potential problems, even if the "Check Engine" light is off. Next, inspect the fuel system, focusing on the fuel pump and filter, as a malfunction here can lead to stalling. Ensure that the fuel is clean and of good quality, as this can also impact performance. Moving on to the ignition system, check the ignition coils and spark plugs for wear, as misfires can cause the engine to stall. Additionally, examine the vacuum system for leaks, which can disrupt engine performance. Don't overlook the electrical system; faulty connections can lead to various issues, including stalling. The idle control valve is another critical component to inspect, as its malfunction can result in rough idling. Lastly, consider the cooling and transmission systems, as overheating or transmission issues can also contribute to stalling. By following this structured approach, you can effectively diagnose and potentially resolve the stalling issue in your Subaru Outback.

What are the common problems that could cause a 2016 Subaru Outback engine to stall?

When dealing with engine stalling in a 2016 Subaru Outback, it's essential to understand the common problems that could be at play. One of the primary culprits is the fuel pump, particularly if it has been affected by the recall concerning faulty fuel pump impellers. If you notice symptoms like a rough engine or the 'check engine' light illuminating, it may be time to inspect or replace the fuel pump. Additionally, issues with the Continuously Variable Transmission (CVT) can lead to stalling, especially if the engine isn't warmed up adequately before driving. Allowing the engine to idle for a few minutes can often mitigate this problem. Electrical issues, such as excessive current draw from the power steering motor, can also crash the Engine Control Unit (ECU), resulting in sudden stalling. It's crucial to check for any electrical faults if you experience unexpected engine shutdowns. Furthermore, mechanical problems, including tools left in the engine bay during maintenance, can cause vibrations that lead to stalling. Always perform a thorough inspection after any DIY work to avoid such mishaps. Lastly, keep an eye out for other potential issues like faulty sensors or transmission problems, as these can also contribute to engine stalling. By being aware of these common problems, you can take proactive steps to diagnose and address stalling issues effectively.

How urgent is it to address the engine stalling issue in a 2016 Subaru Outback?

Addressing the engine stalling issue in a 2016 Subaru Outback is of utmost urgency due to the significant safety risks it poses. When an engine stalls, particularly while driving, it can lead to a sudden loss of control, increasing the likelihood of accidents, especially at high speeds. Common causes of stalling include a faulty fuel pump, which has been a known issue in various Subaru models, including recalls for cracked pumps that can fail unexpectedly. Other mechanical problems, such as faulty camshaft position sensors or issues with the continuously variable transmission, can also contribute to this dangerous situation. Prompt diagnosis and repair are essential; neglecting these symptoms can lead to more severe consequences, including extensive engine damage and costly repairs. Therefore, it is crucial for owners to have their vehicles inspected by a qualified mechanic or dealership as soon as possible to ensure safety and prevent further complications.

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2016 Subaru Outback Engine Stalling: Causes & Repairs