Car intermittently will studder and not go into first gear or go into second gear dangerously having car bog down and almost stall and then it violently downshifts having car RMP Hague go very high then slip and have no power to wheels and then a few seconds later go into second gear violently taking off again. Have tried taking issue to dealer but won’t even look unless check engine light comes on. Which it sometimes will for this issue and will shut back off before my short drive to dealership. Very frustrated especially being my first new car paying monthly to have this problem
Subaru Legacy check engine light comes on
135 of the 3,183 owner complaints about the Subaru Legacy describe check engine light, most of them for the 2006 model year.
- owner complaints
- 135
- worst model year
- 2006
- typical repair cost reported
- $1,976
- typical mileage
- 93,000
Is there a fix? There are 4 recalls for this area of the car. See below
By model year
Often reported together
Adaptive cruise 38Stalling 21Loss of power 8Overheating 5Hesitation 5Engine failure 5Warning lights 4Won't shift 4
Trouble codes mentioned
P2138 14P26A3 1P263A 1P2318 1P0867 1P0843 1P0712 1P014A 1P0133 1
What owners say
The contact owns a 2021 Subaru Legacy. The contact stated that while driving at various speeds during colder weather, the heater failed to operate as intended. Additionally, the Eyesight system was inoperable. The check engine and other unknown warning lights were displayed. In addition, the contact stated that the engine failed to warm up as intended after being started, and the engine temperature was 107°F, which was below the normal engine temperature of 200°F. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the Thermal Control Valve needed to be replaced. The contact related the failure to Technical Service Bulletin: 09-119-24; however, the vehicle was not repaired because the vehicle had a Salvaged Title. The manufacturer was made aware of the failure. The failure mileage was approximately 60,000.
The week after purchase: The car shuts off when braking and needs to be put into park to be started again. Also the check engine light came on and I wonder if it has electrical issues.
CVT Transmission Failure. Failure occurred at approximately 66,706 miles on 5/16/25. The Check Engine and AT Temp lights appeared in the instrument cluster. The driving conditions when this happened were a safety concern. First, the vehicle would crawl, shutter, and almost stall with high RPMs when attempting to climb a hill. Second, on a level surface at any given time the vehicle would not respond then lunge forward unexpectedly. The vehicle was inspected by a Subaru Dealership and the diagnosis was "Internal failure of transmission". The transmission needs to be replaced. The same driving conditions and error codes were experienced by an AAMCO Transmission repair facility. The diagnosis was codes P0843 and P0867 present prompting the transmission to be replaced. This repair was completed on 6/4/25. The failed transmission is no longer available.
Subaru has released a service bulletin regarding concerns with the Thermo Control Valve in specific vehicles. Unfortunately, individuals with vehicles bearing a rebuilt title, including myself, are required to cover expenses exceeding $2,000 out of their own pockets. Despite evidence indicating that the issue with the engine area is unrelated to the vehicle's rebuilt title, Subaru has chosen not to initiate a recall. This unequal treatment of titled vehicle owners is unjust, especially considering that these vehicles have passed all necessary local inspections and regulations to be deemed roadworthy. All vehicles falling within the designated mileage and age parameters should qualify for assistance. It is my belief that a recall must be issued, as this is a mechanical flaw present since the vehicle's initial manufacturing. In the accompanying service bulletin, Subaru acknowledges fault by stating that they have developed a more reliable and durable component. A P26A3 check engine light code.
The catalytic converter has been replaced twice and is now needing a third replacement. The car emits gas fumes, unsafe emissions, and the fuel causes the mechanism to be extremely hot and unsafe. Over time, the car has had reduced gas flow and will stop running. The dealer has confirmed the three converters installed have been defective. The manufacturer, Subaru, was contacted to inspect the car but refused. Precious years have recalls of the fuel mechanisms. The check engine light stays on when unsafe emissions are detected.
The contact owns a 2016 Subaru Legacy. The contact stated that while driving at 60 MPH, the check engine warning light illuminated. The contact became aware that while the check engine light remained illuminated the horn failed to function as designed. The contact stated that after the check engine warning light issue was resolved the horn returned to normal functionality. The vehicle was not taken to the dealer or an independent mechanic. The manufacturer was notified of the failure but provided no assistance; however, the manufacturer informed the contact that the failure was a known issue and advised the contact to stop driving the vehicle until the check engine warning light issue was resolved. The failure mileage was 184,000.
My Subaru ran perfectly fine until the water pump and cooler lines got replaced after these were replaced it was tried to be driven and the car then had no idea what gear it was in drive is drive neautral is drive and reverse does not work at all paddle shifters won’t work AT oil temp light check engine light brake light flashing cruise control light all came on and the car will only go forward and it’s making some crazy shutter noises when you start it and sometimes it shuts off after it was started.
Without any reason a random issue came up. Special feature components lit up on dashboard. Everything but “check engine lit up and the car features were disabled. Disabled items were eye sight, lane assist, ABD, electrical parking brake, hill assist, vehicle dynamics control. With all these lights on my power steering was also disabled. Took to dealer a year ago and all they did was “updated computer system. 3 months later the t started happening again but only intermittently but for past 3 days it’s been constant
catalytic converter plugged at 56,000 miles. cause the catalytic converter to get red hot and melt o2 sensors. this caused the cel to eliminate and make the safety features turn off. I plugged an obd2 reader in to the car and diagnosed the problem. I had to replace the entire catalytic converter assembly under the as well as all of the o2 sensors.
Related recalls
Engine and engine cooling: cooling system: hoses/lines/piping/fittings
- What is wrong
- Subaru is recalling certain model year 2010 outback and legacy passenger vehicles manufactured from july 31 through december 1, 2009. A crack or split can occur in the CVT cooler hose resulting in a fluid leak.
- Risk
- If the fluid is completely leaked during driving, the vehicle will come to a stop, possibly resulting in a crash.
- Remedy
- Subaru will notify owners and dealers will replace any affected cooler hoses free of charge. The safety recall began on june 8, 2010. Owners may contact subaru at 1-800-subaru3 (1‑800‑782‑2783).
Recall number 10V196000 · Recall details
Engine and engine cooling: engine
- What is wrong
- Subaru is recalling 16,715 my 2007-2008 legacy sedans and wagons, my 2008 impreza sedans and wagons, and my 2009 forester vehicles. Some vehicles may have the cylinder head-side oil supply pipe and turbocharger-side pipe improperly assembled.
- Risk
- Vibration would occur while driving and, over time, could eventually result in cracking the pipe which would allow oil to leak. If leaking oil contacts components operating at high temperatures, an engine compartment fire could occur.
- Remedy
- Dealers will inspect for cracking or an oil leak at the oil supply pipe at the cylinder head-side. An additional bracket will be installed to increase rigidity of the pipe and the pipe assembly will be replaced with a modified part. The recall began on october 20, 2008. Owners may contact subaru at 1‑800‑782‑2783.
Recall number 08V460000 · Recall details
Engine and engine cooling: cooling system
- What is wrong
- On certain sport utility and passenger vehicles equipped with 4-cylinder engines, the water pump pulley center hole was improperly machined.
- Risk
- In some instances, the interference fit between the inner wall of the pulley center hole and the water pump drive shaft was not as tight as specified in the drawing specification. This could result in the water pump pulley dislodging from the water pump shaft, which can cause severe engine damage/seizure during vehicle usage.
- Remedy
- Dealers will replace the water pump. Owner notification began september 12, 2002. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact subaru at 1‑800‑782‑2783.
Recall number 02V240000 · Recall details
Engine and engine cooling: engine
- What is wrong
- Vehicle description: passenger vehicles, also service parts supplied to subaru dealers are involved (lot numbers f01 j21d2, f01 j30d2, f02 j09d1, f02 j09d2, and f02 j20d1). The purolator oil filter cans used on these vehicles can fracture causing a vaporized oil spray and subsequent oil leak.
- Risk
- This vaporized oil spray can result in oil vapor ignition by the hot exhaust system resulting in a possible underhood fire.
- Remedy
- Dealers will inspect and replace these engine oil filters.
Recall number 98V127000 · Recall details
Questions about the Subaru Legacy check engine light
Why does the check engine light come on in the Subaru Legacy?
Owners who report it most often also describe adaptive cruise control problems, engine stalls while driving and sudden loss of power, and the codes they mention most are P2138, P26A3 and P263A.
Which Subaru Legacy years have check engine light problems?
The model years with the most reports are 2006 (30 complaints), 2005 (11 complaints) and 2010 (9 complaints).
How much does it cost to fix check engine light on the Subaru Legacy?
Owners who mentioned a price put the repair at about $1,976 (median of 10 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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