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 CARSECTION 77 (2.0L - DTCS P064A TO P0850)
2024 Jeep Grand Cherokee L Limited, RWD
Section 77 (2.0L - DTCS P064A To P0850)
2024 Jeep Grand Cherokee L Limited, RWDSECTION Section 77 (2.0L - DTCS P064A To P0850)
WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
- DTC Troubleshooting
- P064A-Fuel Pump Control Module 1
- Known Issues - FPCM System
- FPCM System Operation
- Functional Description- Fuel Pump Control Module (FPCM) And Fuel Pump
- Functional Description - Powertrain Control Module (Pcm)
- Technical Data-Fuel System Pressure Specifications
- When Monitored
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview-Fuel Pump Control Module
- Preliminary Diagnostic Checks
- Check For An Active Or Intermittent Condition
- Diagnostic Test - Fuel Pump Control Performance Faults (P025B, P027B, P062A, P064A, P26EA)
- Powertrain Verification Test
- P0652-Sensor Reference Voltage 2 Circuit Low
- P0653-Sensor Reference Voltage 2 Circuit High
- P0685-ASD/Main Control Circuit
- P0688-ASD/Main Sense Circuit
- P0698-Sensor Reference Voltage 3 Circuit Low
- P0699-Sensor Reference Voltage 3 Circuit High
- P06DA-Engine Oil Pressure Control Circuit
- P06DD-Engine Oil Pressure Control Circuit Stuck Off
- P06DE-Engine Oil Pressure Control Circuit Stuck On
- P06E4-Control Module Wake-Up Circuit Performance
- P0850-Park/Neutral Switch Performance
- P064A-Fuel Pump Control Module 1
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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.