P0997: Shift Solenoid F Control Circuit Range/Performance

The drive circuit of shift solenoid F works electrically but its measured current or voltage does not fit the command. No manufacturer was found to document this code. The users of the F block, Nissan's RE0F11A CVT and a 2019 Mitsubishi six-speed, list only P0998 and P0999. FCA's nine-speed bulletin 21-019-17 (2015 Chrysler 200 and Jeep Cherokee) shows how the slot is used for solenoids 2 to 5, with P0975, P0978, P0981 and P0984 for control circuit performance, but stops before a sixth solenoid. Genesis reports an electrical fault of its solenoid F under P2709 instead. CARB requires transmission outputs to be checked for proper function. P097F is the open circuit, P0998/P0999 low and high.

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.

Symptoms

Warning light depending on calibration
Missing or harsh shifts into gears using this solenoid
Possible limp mode

Most likely causes

Solenoid coil resistance out of specification
High-resistance connector or harness contact
Weak driver stage in the transmission control module

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
Compare the reading with other engine data while varying the engine speed.
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
It can trigger limp mode.
It affects emissions.

What each character of P0997 means

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

Frequently asked questions

Can I keep driving with code P0997?

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 P0997?

The most common causes are: solenoid coil resistance out of specification; high-resistance connector or harness contact; weak driver stage in the transmission control module.

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.