P0995: Transmission Fluid Pressure Sensor/Switch F Circuit High

The signal of pressure sensor or switch F stays high: with a normally closed switch the contacts stay open, which looks like permanent pressure, or the wire is open or shorted to voltage. No manufacturer documents this use publicly. Hyundai/Genesis bulletins 17-AT-001-G and 21-AT-016HG list P0995 in their subject lines, but their tables pair it with Auto Shift Manual Mode Circuit (SBC), and 21-AT-016HG prints the DTC as P095500; this is a misprint for P0955 and does not count as a use of P0995. GM's matching switch E code P0990 is a Special No Trip without MIL; Saab's 9-4X text treats an open and a short to voltage alike as high. CARB requires such checks on transmission inputs. P0994 is the low side.

Symptoms

• Harsh or delayed shifts
• Shift adaptation frozen
• Possible limp mode

Most likely causes

• Open signal wire or unplugged connector
• Signal wire shorted to voltage
• Switch stuck open inside the valve body module

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the fluid level and condition
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. Read the input and output speed in live data
4. Check the connector and wiring
5. Check for other related engine codes
6. Consult the manufacturer's procedure for the transmission

Good to know

• Repair difficulty: hard
• It can trigger limp mode.
• It affects emissions.

What each character of P0995 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 9: Transmission
• 95: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0995?

Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.

What causes code P0995?

The most common causes are: open signal wire or unplugged connector; signal wire shorted to voltage; switch stuck open inside the valve body module.

Related codes

• P0992Transmission Fluid Pressure Sensor/Switch F Circuit
• P0993Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance
• P0994Transmission Fluid Pressure Sensor/Switch F Circuit Low
• P0996Transmission Fluid Pressure Sensor/Switch F Circuit Intermittent
• P0990Transmission Fluid Pressure Sensor/Switch E Circuit High
• P0955Auto Shift Manual Mode Circuit

Sources

• law.cornell.edu: 13 CCR 1968.2
• static.nhtsa.gov: MC 10125169 9999
• static.nhtsa.gov: MC 10202185 0001
• saabwisonline.com: dtc p0989 or p0990

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.