Tesla alert codes
Tesla alert codes, explained in plain English
Codes like APP_w269 or GTW_w174 are the short names your car gives the messages it stores. Most are notices. A few need action. Each page below shows Tesla's wording, what it means, how serious it is, and how often we see it on real cars.
APP
Driver assistance and cameras
CP · PCS · UMC
Charging
BMS · GTW
Battery and electrical power
DI · VC · UI
Drive system, body, screen and USB
UMC_a017Needs attention
Charge rate reduced, wall plug temperature high
Charging system · seen on 2 of 23 cars
What it means
GTW_w018Needs attention
Electrical system power reduced
Electrical system · seen on 2 of 23 cars
What it means
GTW_w174Needs attention
Schedule service to replace low voltage battery
Electrical system · seen on 2 of 23 cars
What it means
BMS_a063Worth watching
Unable to charge
Battery management · seen on 2 of 23 cars
What it means
VCSEC_a221Worth watching
Air pressure below recommendation for tires
Tire monitoring · seen on 6 of 23 cars
What it means
APP_w269Information only
Self-Driving features limited
Driver assistance · seen on 15 of 23 cars
What it means
APP_w304Information only
Camera blocked or blinded
Driver assistance · seen on 11 of 23 cars
What it means
Sorted most urgent first. More codes are being added. Levels are RideRite's own read, based on Tesla's wording and what we see on real cars.
See every alert your own Tesla has stored
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Free RideRite Health Check
Every alert your Tesla has stored, battery health against new, tire pressures and warranty left. Read-only, about a minute.
Ongoing
RideRite Watch
An email in plain English when a new alert appears, a tire starts losing air on its own, or the battery drains while parked.
Written review
Master Tech Review
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See pricing and book onlineRide Rite Mobile Auto Services is an independent mobile Tesla repair shop in San Jose, California. Not affiliated with Tesla, Inc. General information, not a diagnosis of your specific car. Updated September 2026.
