P0756 — Shift Solenoid B Performance/Stuck Off

P0756: Shift Solenoid B Performance/Stuck Off — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Shift Solenoid B Performance/Stuck Off. Basic catalogue definition; diagnostic details have not yet been reviewed.

Affected system: Powertrain

Symptoms

  • A transmission warning, delayed shifting or gear slip may occur; actual symptoms depend on the vehicle.
  • P0756 concerns shift solenoid B performance or a stuck-off condition, not a confirmed failed coil.

Possible causes

  • Low or contaminated transmission fluid, a sticking valve or solenoid B may interfere with hydraulic operation.
  • Damaged wiring or connectors may also disrupt the command.

What to check

  • Read P0756, other transmission codes and freeze-frame data.
  • Check fluid level and condition according to the correct gearbox procedure; inspect accessible wiring.
  • Where supported, compare the B solenoid command and transmission response before replacing components.

Also written as: P0756-00, P075600, PO756 (some scan tools add the fault-type byte, e.g. -00).