Code Definition

P07A8 — Low/reverse clutch stuck in On

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

About P07A8

P07A8 is a generic (obd-ii standard) powertrain diagnostic trouble code recorded for Ford vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P07A8 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 P07A8 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 P07A8 fault code is set when the Engine Control Module (ECM) or Transmission Control Module (TCM) detects that the low/reverse clutch in the transmission is stuck in the 'On' position. The low/reverse clutch is a critical component in automatic transmissions, engaging to facilitate the vehicle’s movement in low gear or reverse. When this clutch is stuck in the 'On' position, it remains engaged continuously, which can lead to transmission performance issues, abnormal gear shifting, and potentially cause damage to the transmission.

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