DTC codes / P09xx · Transmission / P097B
P097B indicates that the transmission control module (TCM) has detected an open circuit or excessive resistance in the control circuit for shift solenoid B, which is responsible for controlling a specific gear shift. The TCM commands the solenoid to change states but does not see the expected current flow or voltage feedback, so it sets this code and may default to a limp-home mode.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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