Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC Descriptor
- DTC B101E 00
-
Electronic Control Unit Software Malfunction
- DTC B101E 31
-
Electronic Control Unit Software Internal Checksum Error
- DTC B101E 32
-
Electronic Control Unit Software General Memory Malfunction
- DTC B101E 41
-
Electronic Control Unit Software Not Programmed
- DTC B101E 42
-
Electronic Control Unit Software Calibration Not Programmed
- DTC B101E 43
-
Electronic Control Unit Software EEPROM Incorrect Programming
- DTC B101E 44
-
Electronic Control Unit Software Security Access Not Activated
- DTC B101E 45
-
Electronic Control Unit Software Variant Not Programmed
- DTC B101E 46
-
Electronic Control Unit Software Configuration Not Programmed
- DTC B101E 47
-
Electronic Control Unit Software VIN Not Programmed
- DTC B101E 48
-
Electronic Control Unit Software Security Code Not Programmed
- DTC B101E 4A
-
Electronic Control Unit Software Programming Checksum Error
- DTC B101E 4B
-
Electronic Control Unit Software Calibration Not Learned
- DTC B101E 4C
-
Electronic Control Unit Software DTC Memory Full
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.