Code Definition

P0892 — TCM Power Relay Sense Circuit Intermittent

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

About P0892

P0892 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 P0892 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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 P0892 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 P0892 is logged when the control module detects intermittent signals or disruptions in the Transmission Control Module (TCM) power relay sense circuit. This intermittent condition suggests that the circuit, which monitors the status of the TCM power relay, is experiencing occasional interruptions or fluctuations in signal transmission. Such sporadic issues can lead to unpredictable transmission behaviour, as the control module may intermittently lose the ability to accurately assess the status of the power relay, affecting the power supply to the TCM.

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