DTC codes / P2Dxx · Hybrid propulsion / P2DBD
P2DBD indicates that the powertrain control module has detected an out-of-range or erratic signal from the coupler lock position sensor on the battery charger B circuit, which is typically part of a high-voltage charging system on electrified vehicles. The computer compares the sensor voltage against expected values for the commanded lock position and flags a fault when the signal falls outside the valid range or does not change as expected during a lock or unlock event.
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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