P1596moderate severityPowertrain
Speed Control Switch Always High
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The PCM detected the speed control switch signal is stuck in a high voltage state. This is a Chrysler-specific code with no direct OBD-II generic equivalent.
Symptoms
- Cruise control inoperative
- Check engine light on
- Cruise engages unexpectedly
Common causes
- Stuck speed control switch
- Wiring shorted to voltage
- Bad connector
- Faulty PCM
Diagnostic steps
- Scan for stored codes
- Test speed control switch voltages
- Inspect wiring for short to power
- Check connector integrity
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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
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1