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 MANUALSJEEP2008LIBERTY SPORT, RWD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMDTCS P0642 TO P1573
2008 Jeep Liberty Sport, RWD, Automatic
DTCS P0642 To P1573
2008 Jeep Liberty Sport, RWD, AutomaticSECTION DTCS P0642 To P1573
- P0642-Sensor Reference Voltage 1 Circuit Low
- P0643-Sensor Reference Voltage 1 Circuit High
- P0645-A/C Clutch Control Circuit
- P0652-Sensor Reference Voltage 2 Circuit Low
- P0653-Sensor Reference Voltage 2 Circuit High
- P0685-Auto Shutdown Control Circuit
- P0688-Auto Shutdown Sense Circuit Low
- P0691-Cooling Fan 1 Control Circuit Low
- P0692-Cooling Fan 1 Control Circuit High
- P0693-Cooling Fan 2 Control Circuit Low
- P0694-Cooling Fan 2 Control Circuit High
- P0700-Transmission Control System (Mil Request)
- P0703-Brake Switch 2 Performance
- P0850-Park/Neutral Switch Performance
- P1115-General Temperature Rationality
- P1128-Closed Loop Fueling Not Achieved - Bank 1
- P1129-Closed Loop Fueling Not Achieved - Bank 2
- P1273-A/C Clutch Control Circuit 2 High (TIPM)
- P1275-A/C Clutch Control Circuit 2 OVERCURRENT (TIPM)
- P129C-Inverter Control Circuit High (TIPM)
- P129E-Inverter Control Circuit OVERCURRENT (TIPM)
- P1404-EGR Position Sensor Rationality Closed
- P1501-Vehicle Speed Sensor 1/2 Correlation - Drive Wheels
- P1502-Vehicle Speed Sensor 1/2 Correlation - Non Drive Wheels
- P1572-Brake Pedal Stuck On
- P1573-Brake Pedal Stuck Off
RENDER: 1.0x
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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.