2022 Subaru Outback: check engine light

Filed Aug 18, 2026 · Electrical, Engine · TX

My 2022 Subaru Outback Premium has had repeated intermittent stall/no-start events. The exact failed component is UNKNOWN, but the issue appears related to the fuel system, engine control, electrical system, or heat-related sensor/relay failure. The vehicle is available for inspection upon request. The first event occurred while parked: the engine shut off/would not start, while the dashboard and screen remained powered. After about 30 minutes, it started again. A later event occurred while driving: the engine suddenly shut off, but the dashboard and infotainment screen stayed on. I could not restart the engine for about 10 minutes. When it restarted, the vehicle would not accelerate past about 30 mph, suggesting reduced-power/limp mode. This created a serious safety risk because the vehicle lost motive power while in traffic. The vehicle was taken to a Subaru dealership. The dealer diagnosed the high-pressure fuel pump as failing and replaced it under the powertrain warranty. About one month later, the same issue occurred again while parked: the vehicle shut off, all dashboard warning lights illuminated, and it took several minutes before it would restart. The dealer then stated the battery was weak and replaced the battery. The new battery tested good after replacement. One week later, the issue returned again. A consistent pattern is that the problem occurs when it is hot outside and the vehicle has been running for more than one hour. The vehicle has been inspected by a Subaru dealership multiple times. The problem has not been reliably reproduced by the dealer, but the dealer previously confirmed a failing high-pressure fuel pump and later a weak battery. Warning lamps appeared at the time of failure, including multiple dashboard lights/check engine-type warnings after the engine shut off. There were no consistent warning messages before the stall/no-start events.

Filed Jun 26, 2026 · Electrical, Engine · MD

On May 19th 2026 around noon time, while we (me and my wife passenger) were driving my 2022 Subaru Outback Touring (2.5L, non-turbo) in active congested traffic on our way to airport, the engine shut off as expected by the Auto Start-Stop system when I came to a stop. When I released the brake pedal to proceed, the engine failed to automatically restart. The vehicle became immobilized in a live traffic lane, creating a serious safety hazard with traffic backed up behind me and oncoming vehicles unable to predict my situation. No warning lights or alerts preceded the failure. After shifting to Park and pressing the ignition button multiple times, the engine eventually restarted. There was no prior history of stalling, no check engine light, and the battery and vehicle have been maintained per Subaru's schedule. This is a critical safety defect: a vehicle that disables its own engine in traffic and fails to restart on demand puts the driver, passengers, and surrounding traffic at immediate risk of rear-end collision. The Auto Start-Stop system should never leave a vehicle stranded in a live roadway. The vehicle is available for inspection. I have/have not yet taken the vehicle to a Subaru dealer for diagnosis.

Filed Jun 5, 2026 · Electrical, Transmission · AZ

Recently, the 2022 Outback my mom drives has been having some strange electrical issues. About a year-or-so ago the battery in her outback died. Not unusual in Arizona. I replaced it with an upgraded AGM (Interstate) version—same group, same cranking power. No issues. Recently, after an oil change at the dealer, she called back to report that a “Check Engine” light had come on. She was told that she probably had not put the gas cap on properly. Gas cap was on properly; light went off the next day. A few days later the Auto Stop/Start (ASS) feature started acting up (not functioning). A few days later the ASS turned the engine off and did not restart automatically—in the middle of heavy traffic during rush hour. The ASS light came on. The engine started manually, and we got it home. Battery was dead the next morning. I charged it up and took the car to the local mechanic for a quick assessment. The battery was fine, charging, but the car threw a Code: P0871 Transmission Fluid Pressure Sensor Switch. This mechanic told us that there was a Technical Service bulletin through Subaru that addressed this issue but was also aware that it could be caused by the ASS killing the battery OR other electronic modules which fail to enter sleep mode—which would also cause random lights to come on. An appointment was made to take the car into Peoria Subaru, thinking it would be something they could diagnose easily. It had previously been in for the routine oil change with the inspection. When we dropped the car off, I provided the Advisor the code and a associated TSB for the code. We got the car back that day and were told the following: The tech found that the car currently has a “Aftermarket” AGM battery. Subarus require a “Enhanced Flooded Battery” which would explain multiple codes found for loss of communications and parasitic battery drain--for systems that don't go to "sleep" when the car is not running.

Filed Jan 12, 2025 · Transmission · MD

I noticed a metal sound when I accelerated then the car jerked forward a few times. Shortly afterwards, ~5 min, the dashboard lights came on:Automatic Transmission Oil Temperature, Blind-Spot Detection, Check Engine, EyeSight System, Reverse Auto Braking and Vehicle Dynamic Control. I was able to drive slowly back home but not sure what is going on with this 3 year old car with 47,000 miles on it.

Filed Jan 7, 2025 · Driver assistance · DC

The Thermo control valve on the vehicle failed. This has been such a consistent problem, that Subaru has extended the warranty for this item to 150K miles. I realize that alone is not a safety problem, but the issue is that when there is a check engine light error, the system shuts down the cruise control, lane departure, collision avoidance (EyeSIGHT), and XMODE (all wheel drive). The safety issue is shutting down these unconnected safety features because of a check engine light. I will say that the dealer promptly fixed the problem at no charge under the extended warranty. my concern was the loss of the 4 wheel drive right as major snow was hitting the Mid Atlantic Area.

Filed Oct 15, 2024 · Electrical, Engine · PA

Automatic auto off-on began to fail and car didn't start well. I began to disable the automatic auto on off while driving because it began to sound like it would stall out while stopped at a traffic light . Then I forgot to disable the automatic auto off on and car stalled out while stopped at a traffic light. I took it to dealer, Rafferty Subaru, they couldn't find anything wrong with it. Then a few days later check engine light and other icons started flashing on dashboard. I took it to dealer, they said the gas cap was off. For the next week the automatic auto off on sounded like it would fail so I disabled it, the car didn't start normally every morning, and it began to feel like it didn't shift correctly as I accelerated or slowed down. About one day later it suddenly lurched to almost a stop while driving, check engine light was flashing, other icons on dashboard were flashing, the Park Brake icon started flashing. The engine continued to run but I couldn't go more than 2 mph. I put it in park and it started to smell like something was burning so I turned it off. I had to have it towed to the dealer, Rafferty Subaru.

Filed Feb 16, 2023 · Engine · WI

This has happened many times since my vehicle ownership in May. Today for example I am on the highway cruising along (cruise control set) and alarms start going off, the vehicle lurches as it self-disables safety features one by one - Cruise control shuts off automatically - check engine light on, reverse auto breaking disabled, lane assist disabled, Collision avoidance disabled, entire eyesight system disabled. (and I'm sure more I am missing) I have contacted Subaru of America many times about this fault, they have yet to respond appropriately to my inquiries (usually they dont respond at all or simply tell me something about the factory stereo?). The only fix I've found is removing the gas cap tapping it a few times and resetting (to the "one-click") tightness. After multiple start/stops the codes will clear and life will resume with safety features. This incident today was 204.3 miles into my gas tank, not sure how the gas cap is related but something is definitely wrong. If it truly is the gas cap they could simply have a small icon on the 11" display vs disabling every safety feature- While I am DRIVING!

Filed Aug 4, 2022 · Electrical · NJ

Battery drained, car would not start. First occurrence with new car at 831 miles, battery diagnosed as defective and replaced by manufacturer. Second occurrence at 4620 miles after sitting unused 8 days at airport parking, battery drained and most "check engine" lights on after jump-starting. EyeSight and most safety features disabled until checked and reset by manufacturer. Manufacturer quote "CAUSE: Problem due to vehicle sitting for more than a week low battery voltage concern. Recharged battery and it passes test. 100009 No problem found." Maintenance rep said car is working to specs. However a periodic dead battery to seniors who do not drive daily but desperately need a reliable car in case of sudden emergencies is cause for a safety concern.