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.
2023 Jeep Grand Cherokee L Laredo, AWDFACTORY OEM SERVICE PROCEDURE
Diagnostic Code Index
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B1D60-00 | FRONT SEAT IDENTIFICATION CIRCUIT |
| B1DAA-14 | LUMBAR SWITCH - CIRCUIT SHORT TO GROUND OR OPEN |
| B1DAA-15 | LUMBAR SWITCH - CIRCUIT SHORT TO BATTERY OR OPEN |
| B1DAA-2A | LUMBAR SWITCH - STUCK |
| B1DAA-56 | LUMBAR SWITCH - INVALID / INCOMPATIBLE CONFIGURATION |
| B1EA9-11 | MULTI CUSHION MEMORY SEAT PUMP FAILURE - CIRCUIT SHORT TO GROUND |
| B1EA9-12 | MULTI CUSHION MEMORY SEAT PUMP FAILURE - CIRCUIT SHORT TO BATTERY |
| B1EA9-13 | MULTI CUSHION MEMORY SEAT PUMP FAILURE - CIRCUIT OPEN |
| B22A9-04 | ECU INTERNAL PERFORMANCE - SYSTEM INTERNAL FAILURES |
| B22A9-49 | ECU INTERNAL PERFORMANCE - INTERNAL ELECTRONIC FAILURE |
| U0020-00 | CAN B BUS OFF PERFORMANCE |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0199-00 | LOST COMMUNICATION WITH DRIVER DOOR MODULE |
| U0200-00 | LOST COMMUNICATION WITH PASSENGER DOOR MODULE |
| U02B1-00 | LOST COMMUNICATION WITH COMFORT AND CONVENIENCE DISPLAY "A" |
| U0422-00 | IMPLAUSIBLE DATA RECEIVED FROM BODY CONTROL MODULE |
| U049A-00 | IMPLAUSIBLE DATA RECEIVED FROM DRIVER DOOR MODULE |
| U0501-00 | IMPLAUSIBLE DATA RECEIVED FROM PASSENGER DOOR MODULE |
| U050A-00 | IMPLAUSIBLE DATA RECEIVED FROM MEMORY SEAT MODULE |
| U0511-00 | IMPLAUSIBLE DATA RECEIVED FROM PASSENGER MEMORY SEAT MODULE |
| U05B2-00 | INVALID DATA RECEIVED FROM COMFORT AND CONVENIENCE DISPLAY "A" |
| U115C-00 | LOST COMMUNICATION WITH ETM |
| U147C-00 | IMPLAUSIBLE DATA RECEIVED FROM ETM |
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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