P0976 — Shift Solenoid B Control Circuit Low

P0976: Shift Solenoid B Control Circuit Low — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Shift Solenoid B Control Circuit Low. Basic catalogue definition; diagnostic details have not yet been reviewed.

Affected system: Powertrain

Symptoms

  • Shift quality can deteriorate or certain gears may become unavailable.
  • The transmission may enter a restricted mode.

Possible causes

  • A solenoid B electrical defect, loose terminals or damaged wiring can reduce control voltage.
  • Fluid or valve-body faults need distinct hydraulic confirmation.

What to check

  • Confirm P0976 and inspect solenoid B wiring and connectors.
  • Measure voltage, continuity and solenoid resistance per the vehicle procedure.

Also written as: P0976-00, P097600, PO976 (some scan tools add the fault-type byte, e.g. -00).