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.
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HOMESERVICE MANUALSJEEP2024GRAND CHEROKEE L LIMITED, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 48 (8HP75 AUTOMATIC TRANSMISSION - DTCS P1D99-00 TO P1DB3-00)
2024 Jeep Grand Cherokee L Limited, RWD
Section 48 (8HP75 Automatic Transmission - DTCS P1D99-00 To P1DB3-00)
2024 Jeep Grand Cherokee L Limited, RWDSECTION Section 48 (8HP75 Automatic Transmission - DTCS P1D99-00 To P1DB3-00)
WARNING: This page is about a different variant/trim than selected.
- DTC Troubleshooting
- P1D99-00-Incorrect Gear Ratio: Clutch B Or E Defective
- P1D9A-00-Incorrect Gear Ratio: Clutch C Or D Defective
- P1D9B-00-Incorrect Gear Ratio: Clutch A Or E Defective
- P1D9C-00-Incorrect Gear Ratio: Clutch A Or C Defective
- P1D9D-00-Incorrect Gear Ratio: Clutch B Or C Defective
- P1D9E-00-Incorrect Gear Ratio: Clutch C Or E Defective
- P1D9F-00-Incorrect Gear Ratio: Clutch D Or E Defective
- P1DA0-00-Incorrect Gear Ratio: Clutch A, B, Or C Defective
- P1DA1-00-Incorrect Gear Ratio: Clutch A, B, Or E Defective
- P1DA2-00-Incorrect Gear Ratio: Clutch B, C, Or E Defective
- P1DA3-00-Incorrect Gear Ratio: Clutch B, D, Or E Defective
- P1DA4-00-Incorrect Gear Ratio: Clutch B, C, Or D Defective
- P1DA5-00-Incorrect Gear Ratio: Clutch C, D, Or E Defective
- P1DA6-00-Incorrect Gear Ratio: Clutch A, C, Or D Defective
- P1DA7-00-Incorrect Gear Ratio: Clutch A, D, Or E Defective
- P1DA8-00-Incorrect Gear Ratio: Clutch A, B, Or D Defective
- P1DA9-00-Transmission Fluid Temperature Rationality
- P1DAA-00-Trans Temp Undetermined
- P1DAB-00-Vehicle Speed Undetermined
- P1DAC-00-Engine Speed Undetermined
- P1DAD-00-Input Shaft/Output Shaft Direction Correlation
- P1DAF-00-Incompatible Limp In Action Requested
- P1DB1-00-TCM System Voltage Excessively Low
- P1DB2-00-Actuator Supply Voltage "A" Circuit
- P1DB3-00-TCM Ecu Reset/Recovery Occurred
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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.