Powertrain, generic · Transmission

P0933 Hydraulic Pressure Sensor Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

The pressure reading is electrically valid but does not fit the operating state. Chrysler RFE, RLE and TES transmissions set it when measured line pressure is more than 25 psi (172 kPa) above the commanded value while staying below the highest pressure ever used in that gear; Sonnax notes that a maximum-pressure condition from an open pressure control solenoid circuit can trigger it and mislead toward the sensor. Ferrari lists P0933 on its DCT as an invalid hydraulic pressure sensor signal, read in the NCR gearbox ECU. Neighbours: P0932, P0934 and P0935 are circuit faults, P0936 intermittent, P0869 a true high line pressure. The driver notices firm or harsh shifts.

Likely causes

Open circuit or fault in the line pressure control solenoid causing real excess pressure
Pressure sensor drifting or reading offset
Worn or sticking valves in the valve body
Wrong fluid level or degraded fluid

Symptoms

  • Harsh or firm engagements and shifts
  • Warning light on
  • Shift quality does not adapt and may stay rough

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–1,500
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

hydraulic pressure sensorwiring harnesstcm

Related codes

P0932P0934P0935P0936P0868P0869

References: law.cornell.edu, sonnax.com, gearsmagazine.com, static.nhtsa.gov.