Code Definition

B2158 — Seat Recline Motor Memory Position Out of Range

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B2158

B2158 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B2158 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B2158 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The B2158 fault code indicates that the seat control module has detected the stored seat recline memory position is outside the valid operating range of the recline motor. Memory seats store a position value for each programmed driver, and the module compares this stored value against the current recline position sensor feedback when a memory recall is requested. The code sets when the saved memory value exceeds the calibrated minimum or maximum recline limits, when the recline position sensor counts have drifted from the stored reference, or when a relearn procedure has not been completed aft...

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