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.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Symptoms
- Harsh or firm engagements and shifts
- Warning light on
- Shift quality does not adapt and may stay rough
Most 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
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: hard
- It can trigger limp mode.
- It affects emissions.
What each character of P0933 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- 9: Transmission
- 33: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0933?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P0933?
The most common causes are: 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.
Related codes
- P0932Hydraulic Pressure Sensor Circuit
- P0934Hydraulic Pressure Sensor Circuit Low
- P0935Hydraulic Pressure Sensor Circuit High
- P0936Hydraulic Pressure Sensor Circuit Intermittent
- P0868Transmission Fluid Pressure Low
- P0869Transmission Fluid Pressure High
Sources
- law.cornell.edu: 13 CCR 1968.2
- sonnax.com: 1205 diagnosing chrysler transmission max line pre
- gearsmagazine.com: diagnosing pressure trouble codes
- static.nhtsa.gov: MC 10168599 0001
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.