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 MANUALSJEEP2009COMMANDER OVERLAND, 4WDREPAIR AND DIAGNOSISDRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLES(FINAL DRIVE CONTROL MODULE (FDCM) - ELECTRICAL DIAGNOSTICS)
2009 Jeep Commander Overland, 4WD
(Final Drive Control Module (FDCM) - Electrical Diagnostics)
2009 Jeep Commander Overland, 4WDSECTION (Final Drive Control Module (FDCM) - Electrical Diagnostics)
- Diagnostic Code Index
- DTC Troubleshooting
- C1400-Transfer Case Range Select Switch Performance
- C1401-Transfer Case Range Select Switch Circuit Low
- C1402-Transfer Case Range Select Switch Circuit High
- C1403-Transfer Case Range Position Sensor Performance
- C1404-Transfer Case Range Position Sensor Circuit Low
- C1405-Transfer Case Range Position Sensor Circuit High
- C1406-Transfer Case Brake Performance
- C1407-Transfer Case Brake Control Circuit Low
- C1408-Transfer Case Brake Control Circuit High
- C140A- Transfer Case Motor Performance
- C140D- Transfer Case Motor Control Circuit Open
- C140E-Transfer Case Motor Blocked
- C140F-Transfer Case Range Position Sensor Erratic Performance
- C1413-4 Hi/Lo Select Switch Circuit Stuck
- C1414-Neutral Select Switch Circuit Stuck
- C1415- Transfer Case Motor Current Performance
- C1417-Front Differential Control Circuit Low
- C1418-Front Differential Control Circuit High
- C141A-Front Differential Control Circuit Current Performance
- C141B-Front Differential Clutch Performance
- C141D-Rear Differential Control Circuit Low
- C141E-Rear Differential Control Circuit High
- C1420-Rear Differential Control Circuit Current Performance
- C1421-Rear Differential Clutch Performance
- C1438-Transfer Case Differential Clutch Worn
- C1444-Transfer Case Motor Overuse
- C2100-Battery Voltage Low
- C2101-Battery Voltage High
- C2109-Drivetrain Supply Voltage Circuit Low
- C2111-Drivetrain Sensor Supply Circuit Low
- C2112-Drivetrain Sensor Supply Circuit High
- C2113-Drivetrain Sensor Supply Voltage Circuit Open
- C2201-Internal Controller
- C2206-Configuration Error
- C230A-Neutral Indicator Control Circuit Low
- C230B- Neutral Indicator Control Circuit High
- U0401-Implausible Data Received From ECM (FDCM)
- U0402-Implausible Data Received From TCM
- U0415-Implausible Data Received From Abs
- U0429-Implausible Data Received From SCM
- U0431-Implausible Data Received From FCM
- Standard Procedure
RENDER: 1.0x
NO RELATED
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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.