P0755: Shift Solenoid B Malfunction

What does P0755 mean?

Shift-solenoid B operation or its circuit is malfunctioning. The generic code names the solenoid function, but not a universal physical valve location or a single gear.

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

Common causes

• Failed solenoid B
• Damaged wiring or connector
• Restricted hydraulic passages or valve-body trouble

Symptoms

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

Diagnostic focus

Use the transmission code chart to identify B. A generic parts listing can group different solenoid packs, while the service procedure may require a complete assembly.

Can I keep driving with P0755?

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

• Identify solenoid B for the transmission
• Inspect wiring and test the solenoid
• Check fluid condition and hydraulic response if electrical checks pass

Sources & review

• OBD-Codes.com: P0755
• 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.