Transmission Transfer Case Disengaged Solenoid Circuit Failure
Table of contents
P1878 MERCURY Possible Causes
- Faulty Transmission Transfer Case Disengaged Solenoid
- Transmission Transfer Case Disengaged Solenoid harness is open or shorted
- Transmission Transfer Case Disengaged Solenoid circuit poor electrical connection
How do I fix code P1878 MERCURY?
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 P1878 MERCURY code
The cost of diagnosing the P1878 MERCURY 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
- Engine Light ON (or Service Engine Soon Warning Light)
P1878 MERCURY Description
The Transmission Control Module (TCM) monitors the Transmission Transfer Case Disengaged Solenoid. The TCM sets the OBDII code when the Transmission Transfer Case Disengaged Solenoid is not to factory specifications.