Code Definition

P0872 — Transmission Fluid Pressure Sensor/Switch C Circuit Low

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

About P0872

P0872 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 P0872 is stored, the module has detected a signal or supply voltage lower than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

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 P0872 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

he fault code P0872 is triggered when the control module detects a low input signal from the Transmission Fluid Pressure Sensor/Switch 'C'. This condition suggests that the sensor or switch is outputting a signal voltage lower than the expected range set by the manufacturer. This low signal can indicate a problem with the sensor/switch itself, its circuit, or an underlying issue affecting the transmission fluid pressure.

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