P0975 Shift Solenoid B Control Circuit Range/Performance

P0975 indicates shift solenoid B control circuit range/performance. The solenoid B circuit or response does not match the commanded shift strategy.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Transmission
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not diagnose a solenoid B performance code from static resistance alone; compare command, circuit response, and ratio data.

Useful checks before replacing parts

Monitor solenoid B command, circuit state, shift timing, actual gear ratio, input speed, output speed, and fluid temperature.
Inspect internal harness routing, case connector pins, solenoid resistance, connector fluid intrusion, and voltage supply under load.
Review companion ratio, pressure, and shift solenoid codes to decide whether the fault is electrical, hydraulic, or mechanical.

Related OBD-II codes

These nearby transmission entries can help compare wording and fault area. They may share the same verification status as the source database.