Code Definition

P0882 — TCM Power input Signal Low

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

About P0882

P0882 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0882 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0882 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 fault code P0882 is set when the control module detects that the power input signal to the Transmission Control Module (TCM) is lower than the expected range. This low power condition suggests that the TCM is receiving insufficient voltage, which can impair its ability to control and manage the transmission system effectively. Low voltage to the TCM can result in various transmission issues, including delayed shifting or failure to shift.

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