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 MANUALSJEEP2023GRAND CHEROKEE LAREDO X, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEM3.6L - DTCS P0221 TO P032F
2023 Jeep Grand Cherokee Laredo X, AWD
3.6L - DTCS P0221 To P032F
2023 Jeep Grand Cherokee Laredo X, AWDSECTION 3.6L - DTCS P0221 To P032F
- DTC Troubleshooting
- P0221 Throttle Position Sensor 2 Performance
- P0222 Throttle Position Sensor 2 Circuit Low
- P0223 Throttle Position Sensor 2 Circuit High
- P025A Fuel Pump Module Control Circuit Open
- Notes
- 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
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview - Fuel Pump Control Module
- Preliminary Diagnostic Checks
- Check For An Active Or Intermittent Condition
- Diagnostic Test - FPCM System Command Circuit Faults (P025A, P027A)
- Diagnostic Test - Complete Fuel Pump Control Module System Testing (Not DTC Specific)
- Powertrain Verification Test
- P025B Fuel Pump Module Control Circuit Performance
- Notes
- 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
- 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
- P025C Fuel Pump Module Control Circuit Low
- Notes
- 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
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview - Fuel Pump Control Module
- Preliminary Diagnostic Checks
- Check For An Active Or Intermittent Condition
- Diagnostic Test - FPCM System Voltage Low And High (P025C, P025D, P027C, P027D)
- Powertrain Verification Test
- P025D Fuel Pump Module Control Circuit High
- Notes
- 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
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview - Fuel Pump Control Module
- Preliminary Diagnostic Checks
- Check For An Active Or Intermittent Condition
- Diagnostic Test - FPCM System Voltage Low And High (P025C, P025D, P027C, P027D)
- Powertrain Verification Test
- P0298 Engine Oil Temperature Too High
- P0300 Multiple Cylinder Misfire
- P0301 Cylinder 1 Misfire
- P0302 Cylinder 2 Misfire
- P0303 Cylinder 3 Misfire
- P0304 Cylinder 4 Misfire
- P0305 Cylinder 5 Misfire
- P0306 Cylinder 6 Misfire
- P0325 Knock Sensor 1 Circuit
- P0327 Knock Sensor 1 Circuit Low
- P0328 Knock Sensor 1 Circuit High
- P032F Combustion Engine Producing Insufficient Torque
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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.