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DTC B101E

DTC B101E

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category.


DTC Descriptor

DTC B101E 31

Electronic Control Module, Hardware - Checksum Error

DTC B101E 32

Electronic Control Module, Hardware - General Memory Error

DTC B101E 34

Electronic Control Module, Hardware - RAM Malfunction

DTC B101E 41

Electronic Control Module - Software Not Programmed

DTC B101E 42

Electronic Control Module - Software Calibration Not Programmed

DTC B101E 43

Electronic Control Module, Hardware - EEPROM Incorrectly Programmed

DTC B101E 44

Electronic Control Module, Hardware - Security Access Not Activated

DTC B101E 45

Electronic Control Module - Software Version Not Programmed

DTC B101E 46

Electronic Control Module - Software Configuration Not Programmed

DTC B101E 47

Electronic Control Module - VIN Not Programmed

DTC B101E 48

Electronic Control Module - Security Code Not Programmed

DTC B101E 4A

Electronic Control Module, Hardware - Programming, Checksum Error

DTC B101E 4B

Electronic Control Module, Hardware - Calibration Not Set

DTC B101E 4C

Electronic Control Module, Hardware - DTC Storage Memory Full

Circuit/System Description

Some control modules must be configured with specific software, serial numbers, vehicle options, or other information. If a control module was not properly configured after installation that module may set DTC B101E. The symptom byte listed in the DTC Descriptor is for engineering reference only. No external circuit diagnosis is involved.

Conditions for Running the DTC

Battery voltage is between 9-16 V and data link communications operate normally.

Conditions for Setting the DTC

The control module is not configured properly.

Conditions for Clearing the DTC


• A current DTC clears when the malfunction is no longer present.

• A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.


Reference Information

Schematic Reference

Data Communication Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Data Link Communications Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool References

Control Module References for scan tool information

Circuit/System Verification

Verify DTC B101E is not set.

If the DTC is set, program the control module. If the DTC resets, replace the control module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for control module replacement, setup, and programming