P1650 FORD, LINCOLN, MAZDA, MERCURY: POWER STEERING PRESSURE SWITCH OUT OF SELF-TEST RANGE
POST UPDATED IN May, 2023
P1650 FORD, LINCOLN, MAZDA, MERCURY: POWER STEERING PRESSURE SWITCH OUT OF SELF-TEST RANGE
The Power Steering Pressure (PSP) is a switch that communicates with the PCM (Powertrain Control Module). It sends data related to the fluid present in the vehicle’s power steering pressure system. The PCM adjusts the engine operation as required, taking the information received from the PSP. The Power Steering Pressure Switch has two electrical sensors and a diaphragm.
The DTC P1650 OBDII is set on Ford and other vehicles when an incorrect operation is detected by the PSP. Specifically, the code signals that there are out-of-range values because the power steering pressure input is high at KOEO (Key ON and engine off), but at KOER (Key ON and engine running), the power steering input has not changed its status.
Reasons to set the P1650 OBD2 diagnostic code P1650:
To troubleshoot the P1650 OBDII fault code, try this: