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
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
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.