Code Definition

P0976 — Shift Solenoid B Control Circuit Low

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

About P0976

P0976 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 P0976 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 P0976 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 P0976 fault code is set when the control module detects a low voltage condition in the control circuit of Shift Solenoid B. This solenoid is integral to the operation of automatic transmissions, managing the flow of hydraulic fluid necessary for engaging or disengaging gears. A low voltage condition in this circuit can suggest an electrical problem such as a short to ground, a reduction in voltage supply, or a malfunction within the solenoid itself. Low voltage can lead to insufficient activation or operation of Shift Solenoid B, potentially causing transmission issues like delayed or impr...

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