The P0847 code in your 2020 Ram 2500 indicates the clutch actuator position sensor B circuit is providing a lower voltage signal than expected. This internal transmission sensor issue affects the 68RFE's clutch engagement monitoring.
Understanding Low Input in Heavy-Duty Transmissions
The Ram 2500's 68RFE transmission handles significant torque and loads. Clutch position sensor B monitors one of several clutch packs. Low voltage indicates reduced signal strength affecting clutch B monitoring.
Common Causes of P0847
- Short to ground in sensor B circuit
- High resistance reducing voltage
- Sensor internal failure
- Transmission fluid contamination
- Internal wiring damage
- Connector issues at transmission
Symptoms of Low Input
- Clutch B engagement issues
- Check engine light on
- Shift quality problems
- Harsh engagement under load
- Possible slip in certain gears
- Reduced towing performance
Heavy-Duty Transmission Considerations
The Ram 2500's transmission experiences significant stress during towing. Accurate clutch monitoring is critical for handling heavy loads without damaging the transmission.