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 |
|---|---|---|---|---|
|
CHGS_w078_boostPrechargeFail
|
|
-
|
No
|
|
|
CHGS_w077_iLineOCRMS
|
|
-
|
No
|
|
|
CHGS_w076_iLineOCPk
|
|
-
|
No
|
|
|
CHGS_w075_stateTransitionDenied
|
|
-
|
No
|
|
|
CHGS_w074_cpldFaulted
|
|
-
|
No
|
|
|
CHGS_w056_5VPower
|
|
-
|
No
|
|
|
CHGS_w055_VLineDischarge
|
|
-
|
No
|
|
|
CHGS_w052_memoryError
|
|
-
|
No
|
|
|
CHGS_w050_mGridOverLoaded
|
|
-
|
No
|
|
|
CHGS_w047_HVJB_groundLoss
|
|
-
|
No
|
|
|
CHGS_w044_lostCommsVI
|
|
-
|
No
|
|
|
CHGS_w039_12V
|
|
-
|
No
|
|
|
CHGS_w037_wcOvertempFault
|
|
-
|
No
|
|
|
CHGS_w034_swHVIL
|
|
-
|
No
|
|
|
CHGS_w032_wcFoldbackActive
|
|
-
|
No
|
|
|
CHGS_w031_VLineFreqUF
|
|
-
|
No
|
|
|
CHGS_w030_VLineFreqOF
|
|
-
|
No
|
|
|
CHGS_w029_freqDroopDetected
|
|
-
|
No
|
|
|
CHGS_w028_igbtOT
|
|
-
|
No
|
|
|
CHGS_w027_VOutUV
|
|
-
|
No
|