P1651low severityPowertrain
PSP Switch Input Malfunction
on 2014 Lincoln MKX 3.5L V6 · AWD
What this code means
The Power Steering Pressure switch input to the PCM is not functioning properly. The PCM cannot detect steering load changes.
Symptoms
- Engine stalls when turning at idle or low speed
- Check Engine Light
- No idle speed increase when turning wheel
Common causes
- Faulty PSP switch
- Wiring open or short in PSP circuit
- Low power steering fluid
- Corroded connector
Diagnostic steps
- Test PSP switch with scan tool — verify signal changes when steering
- Check PSP switch connector
- Test wiring continuity
- Check power steering fluid level
Repair notes
Replace PSP switch. Repair wiring. Top off power steering fluid.
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