P27BC: Pressure Control Solenoid N Intermittent

Pressure control solenoid N shows intermittent electrical or hydraulic faults.

Medium severity. Can I keep driving?Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

In automatic transmissions, solenoid valves direct the fluid to select gears and regulate pressures. This code indicates a fault in one of them or in its circuit.

Most likely causes

Solenoid connector not fully seated
Coil resistance drifts with temperature
Connector with intermittent contact under vibration

What to check, in order

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

Check the fluid level and condition according to the manufacturer
Gently move the wiring with the engine running and watch whether the reading changes.
Check the transmission connector
Read the data with a transmission-compatible scanner
Measure the solenoid valve circuit
Leave opening the transmission to a specialized repair shop

Good to know

Repair difficulty: hard

What each character of P27BC means

P: Powertrain: engine and transmission
2: Generic code: same on every make
7: Transmission
BC: Specific fault in that system

Frequently asked questions

Can I keep driving with code P27BC?

Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

What causes code P27BC?

The most common causes are: solenoid connector not fully seated; coil resistance drifts with temperature; connector with intermittent contact under vibration.

Related codes

Sources

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.