P0757: Shift Solenoid B Stuck On

What does P0757 mean?

Solenoid B appears to remain applied when the controller expects it off. Incorrect hydraulic routing can interfere with more than one gear because the solenoid is part of a combined shift strategy.

Generic OBD-II definition: Shift Solenoid B Stuck On. Confirm applicability in your vehicle service information.

Common causes

• Stuck B solenoid or hydraulic valve
• Contamination in the valve body
• Electrical short maintaining actuation

Symptoms

• Harsh, missing, or incorrect shifts
• Limp mode
• Possible slipping or transmission overheating

Diagnostic focus

A stuck-on diagnosis is different from a stuck-off result. Follow the commanded state and actual gear behavior rather than replacing the same component blindly for either code.

Can I keep driving with P0757?

Severity: Medium Avoid towing, steep loads, and prolonged driving until diagnosed. Stop and arrange recovery if the transmission slips, loses drive, overheats, or bangs into gear; driving through slip can cause further damage.

If the check engine light is flashing or the car runs badly, stop driving and have it checked.

Typical fixes

• Inspect control wiring for unwanted power or grounding as applicable
• Compare command and response
• Have solenoid movement and hydraulic operation tested

Sources & review

• OBD-Codes.com: P0757
• TroubleCodes.net: generic code definitions

Definitions and diagnostic background checked 2026-11-06. Generic guidance, not a substitute for the service procedure for your exact year, engine, and transmission.