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.
2021 Jeep Grand Cherokee TrackhawkFACTORY OEM SERVICE PROCEDURE
Module, Memory Seat, Driver (MSMD)
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B1D5E-13 | POWER SEAT SWITCH - CIRCUIT OPEN |
| B1D62-2A | POWER SEAT SWITCH STUCK-STUCK |
| B1D6B-11 | SEAT HORIZONTAL POSITION SENSOR - CIRCUIT SHORT TO GROUND |
| B1D6B-12 | SEAT HORIZONTAL POSITION SENSOR - CIRCUIT SHORT TO BATTERY |
| B1D6F-11 | SEAT FRONT VERTICAL POSITION SENSOR - CIRCUIT SHORT TO GROUND |
| B1D6F-12 | SEAT FRONT VERTICAL POSITION SENSOR - CIRCUIT SHORT TO BATTERY |
| B1D73-11 | SEAT REAR VERTICAL POSITION SENSOR - CIRCUIT SHORT TO GROUND |
| B1D73-12 | SEAT REAR VERTICAL POSITION SENSOR - CIRCUIT SHORT TO BATTERY |
| B1D77-11 | SEAT RECLINER POSITION SENSOR - CIRCUIT SHORT TO GROUND |
| B1D77-12 | SEAT RECLINER POSITION SENSOR - CIRCUIT SHORT TO BATTERY |
| B1D7B-00 | SEAT HORIZONTAL MOTOR CONTROL CIRCUIT PERFORMANCE |
| B1D7F-00 | SEAT FRONT VERTICAL MOTOR CONTROL CIRCUIT PERFORMANCE |
| B1D83-00 | SEAT REAR VERTICAL MOTOR CONTROL CIRCUIT PERFORMANCE |
| B1D87-00 | SEAT BACKREST MOTOR CONTROL - CIRCUIT PERFORMANCE |
| B1D8B-11 | STEERING COLUMN TELESCOPE POSITION SENSOR-CIRCUIT SHORT TO GROUND |
| B1D8B-12 | STEERING COLUMN TELESCOPE POSITION SENSOR-CIRCUIT SHORT TO BATTERY |
| B1D8F-11 | STEERING COLUMN TILT POSITION SENSOR-CIRCUIT SHORT TO GROUND |
| B1D8F-12 | STEERING COLUMN TILT POSITION SENSOR-CIRCUIT SHORT TO BATTERY |
| B1D93-00 | STEERING COLUMN TELESCOPE MOTOR CONTROL CIRCUIT PERFORMANCE |
| B1D97-00 | STEERING COLUMN TILT MOTOR CONTROL CIRCUIT PERFORMANCE |
| B1D9B-54 | SEAT HORIZONTAL FRONT STOP NOT LEARNED-MISSING CALIBRATION |
| B210A-84 | SYSTEM VOLTAGE LOW-SIGNAL BELOW ALLOWABLE RANGE |
| B210B-85 | SYSTEM VOLTAGE HIGH - SIGNAL ABOVE ALLOWABLE RANGE |
| B210D-21 | BATTERY VOLTAGE LOW - SIGNAL AMPLITUDE MINIMUM |
| B210D-21 | BATTERY VOLTAGE LOW-SIGNAL AMPLITUDE < MINIMUM (RHD) |
| B210E-22 | BATTERY VOLTAGE HIGH - SIGNAL AMPLITUDE > MAXIMUM |
| B221C-42 | (MSM) MEMORY SEAT MODULE INTERNAL-GENERAL MEMORY FAILURE |
| B222D-00 | - ECU UNABLE TO CONFIGURE/CONFIGURATION NOT LEARNED |
| U0011-00 | CAN INTERIOR BUS OFF PERFORMANCE |
| U0013-00 | CAN INTERIOR BUS (+) CIRCUIT LOW |
| U0014-00 | CAN INTERIOR BUS (+) CIRCUIT HIGH |
| U0016-00 | CAN INTERIOR BUS (-) CIRCUIT LOW |
| U0017-00 | CAN INTERIOR BUS (-) CIRCUIT HIGH |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0147-00 | LOST COMMUNICATION WITH TELEMATICS GATEWAY (TGW) (RADIO) |
| U0199-00 | LOST COMMUNICATION WITH DRIVER DOOR MODULE |
Factory Service Tools
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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.
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