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 P3400 To U1403
- P3400-MDS Rationality Bank 1
- P3401-MDS Solenoid 1 Circuit
- P3402-Cylinder 1 Deactivation Control Performance
- P3425-MDS Solenoid 4 Circuit
- P3426-Cylinder 4 Deactivation Control Performance
- P3441-MDS Solenoid 6 Circuit
- P3442-Cylinder 6 Deactivation Control Performance
- P3449-MDS Solenoid 7 Circuit
- P3450-Cylinder 7 Deactivation Control Performance
- P3497-MDS Rationality Bank 2
- U0001-Can C Bus
- U0101-Lost Communication With TCM
- U0103-Lost Communication With Electric Gear Shift Module
- U0114-Lost Communication With Final Drive Control Module
- U0121-Lost Communication With Anti-Lock Brake Module
- U0141-Lost Communication With Front Control Module
- U0155-Lost Communication With Cluster
- U0168-Lost Communication With Vehicle Security Control Module (SKREEM-WCM)
- U110A-Lost Communication With SCM
- U110C-Lost Fuel Level Message
- U110E-Lost Ambient Temperature Message
- U1110-Lost Vehicle Speed Message
- U1111-Lost Odometer Message
- U1113-Lost A/C Pressure Message
- U1120-Lost Wheel Distance Message
- U1403-Implausible Fuel Level Signal Received
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.