P0841moderate severityPowertrain
Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
on 2007 Ram 3500 5.9L I6 Cummins · 4WD
What this code means
The pressure sensor or switch A signal is out of the expected range compared to commanded pressure. This often points to a sensor drift or hydraulic pressure problem.
Symptoms
- Erratic shifting
- Slipping transmission
- Check engine light on
Common causes
- Faulty pressure sensor
- Low transmission fluid
- Clogged valve body or filter
- Wiring or connector issues
Diagnostic steps
- Retrieve stored codes and freeze frame
- Verify fluid level and quality
- Compare sensor reading to actual line pressure
- Inspect valve body and hydraulic circuit
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1