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.
2007 Jeep Commander Overland, RWDFACTORY OEM SERVICE PROCEDURE
DTCS P0123 To P0174
- P0123-Throttle Position Sensor 1 Circuit High (Etc)
- P0123-Throttle Position Sensor 1 Circuit High (Non Etc)
- P0125-Insufficient Coolant Temperature For Closed-Loop Fuel Control
- P0128-Thermostat Rationality
- P0129-Barometric Pressure Out-Of-Range Low
- P0131-O2 Sensor 1/1 Circuit Low
- P0132-O2 Sensor 1/1 Circuit High
- P0133-O2 Sensor 1/1 Slow Response
- P0135-O2 Sensor 1/1 Heater Performance
- P0137-O2 Sensor 1/2 Circuit Low
- P0138-O2 Sensor 1/2 Circuit High
- P0139-O2 Sensor 1/2 Slow Response
- P013A-O2 Sensor 1/2 Slow Response - Rich To Lean
- P013C-O2 Sensor 2/2 Slow Response - Rich To Lean
- P0141-O2 Sensor 1/2 Heater Performance
- P0151-O2 Sensor 2/1 Circuit Low
- P0152-O2 Sensor 2/1 Circuit High
- P0153-O2 Sensor 2/1 Slow Response
- P0155-O2 Sensor 2/1 Heater Performance
- P0157-O2 Sensor 2/2 Circuit Low
- P0158-O2 Sensor 2/2 Circuit High
- P0159-O2 Sensor 2/2 Slow Response
- P0161-O2 Sensor 2/2 Heater Performance
- P0171-Fuel System 1/1 Lean
- P0172-Fuel System 1/1 Rich
- P0174-Fuel System 2/1 Lean
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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