Tesla Alert Codes Explained
Every Tesla reports internal alert codes (like BMS_a117)
when something needs attention. Search the dictionary below to find what an alert means and what to do about it.
MyTeslaMate logs them automatically:
hosted TeslaMate with no server to run.
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
|
THC_w0254_radFanProblem
|
|
-
|
No
|
|
|
THC_w0253_rfrgDisPressHi
|
|
-
|
No
|
|
|
THC_w0252_rfrgSuctPressLo
|
|
-
|
No
|
|
|
THC_w0251_rfrgDisPressLo
|
|
-
|
No
|
|
|
THC_w0250_rfrgDisOverTemp
|
|
-
|
No
|
|
|
THC_w0249_sanityTempRiBatHeat
|
|
-
|
No
|
|
|
THC_w0246_exvFloodingDetected
|
|
-
|
No
|
|
|
THC_w0245_CANBusOff
|
|
-
|
No
|
|
|
THC_w0244_PTC_LimitedOpCause
|
|
-
|
No
|
|
|
THC_w0243_aqsLinTmo
|
|
-
|
No
|
|
|
THC_w0242_exvSelfError
|
|
-
|
No
|
|
|
THC_w0238_PTC_RtCoreTempSensor
|
|
-
|
No
|
|
|
THC_w0237_PTC_LeftCoreTempSensor
|
|
-
|
No
|
|
|
THC_w0226_ptcrIGBTShort
|
|
-
|
No
|
|
|
THC_w0225_ptcrLowVoltageRange
|
|
-
|
No
|
|
|
THC_w0224_ptcrSnsFail
|
|
-
|
No
|
|
|
THC_w0223_ptcrThermalShutdown
|
|
-
|
No
|
|
|
THC_w0222_ptcrOverCurrent
|
|
-
|
No
|
|
|
THC_w0221_ptcrHighVoltageRange
|
|
-
|
No
|
|
|
THC_w0220_PTC_PtcFault
|
|
-
|
No
|