DTC codes / P07xx · Transmission / P07B1
P07B1 indicates that the transmission control module (TCM) has detected a friction element—specifically element H—remaining applied when it should be released, based on speed sensor and pressure switch inputs. The TCM commands the element off but sees no change in the monitored parameters, confirming a stuck-on condition.
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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