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Subaru Ascent Transmission Sensor May Misread Pressure

NHTSA campaign 19V855000 · Reported Dec 2, 2019 · Subaru of America, Inc.

high How serious is it? About this label

A loss of drive power while driving increases the risk of a crash. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	19V855000
Reported to NHTSA	Dec 2, 2019
Manufacturer	Subaru of America, Inc.
Part affected	Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
Vehicles covered	1 model/year combination, model years 2019
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

Subaru is recalling certain Ascent vehicles because the transmission hydraulic sensor may not measure the transmission fluid pressure accurately. If the sensor reads the pressure as higher than it really is, the actual hydraulic pressure will be reduced. This can cause the transmission drive chain to lose proper tension, resulting in a loss of drive power and an increased risk of a crash.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your vehicle is affected.
2. Contact a Subaru dealer, or call Subaru customer service at 1-844-373-6614, to schedule the repair.
3. All repairs, including reprogramming, sensor harness replacement, or transmission replacement if needed, are free of charge.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 19V855000. More in how recalls work.

Affected vehicles (1)

2019 Subaru Ascent

Who to contact

Subaru — official Subaru recall lookup

Customer service: 1-844-373-6614

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Subaru Power Train Recalls Involving Driveshafts, Transmissions, and Gear Selection · all 8 Subaru recalls in this area

Other Subaru Ascent recalls

Jul 7, 2026Subaru Ascent and Forester have wrong weight rating labellow
Sep 21, 2023Subaru Driveshaft Bolts May Loosen And Disconnecthigh
Jun 1, 2023Subaru Ascent Front Control Arm Ball Jointhigh
Apr 7, 2023Subaru Ascent Tires May Lose Air Suddenlymedium
Dec 8, 2022Subaru Ascent Cabin Heater Fire Riskcritical
Dec 9, 2021Subaru Ascent, Legacy, Outback Drive Chain Riskhigh

All 13 Ascent recalls

Official notice

Component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Summary: Subaru of America, Inc. (Subaru) is recalling certain 2019 Ascent vehicles. The transmission hydraulic sensor may inaccurately measure the hydraulic fluid pressure.
Safety risk: If the fluid pressure is measured higher than its actual value, the hydraulic pressure will be reduced. If this occurs, the transmission drive chain may not have the proper tension, resulting in a loss of drive power and an increased risk of a crash.
Remedy: Subaru will notify owners, and dealers will reprogram the transmission control unit. The hydraulic sensor harness will be replaced on vehicles with certain stored diagnostic trouble codes. In addition, any vehicle confirmed to have experienced low drive chain tension will have the transmission assembly will be replaced. All repairs will be free of charge. The recall began January 31, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUV-07.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.