Rear Differential Clutch Performance
Table of contents
C1421 JEEP Possible Causes
- Faulty Rear Differential Solenoid
- Rear Differential Solenoid harness is open or shorted
- Rear Differential Solenoid circuit poor electrical connection
- Faulty Final Differential Control Module (FDCM)
How do I fix code C1421 JEEP?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C1421 JEEP code
The cost of diagnosing the C1421 JEEP code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1421 JEEP Description
The Final Differential Control Module (FDCM) monitors the Rear Differential Solenoid. The FDCM sets the OBDII code when the Rear Differential Solenoid is not to factory specifications.