Code Definition

P0985 — Shift Solenoid E Control Circuit Low

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

About P0985

P0985 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 P0985 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 P0985 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 P0985 fault code is set when the control module detects a low voltage condition in the control circuit of Shift Solenoid E. This solenoid is integral to the functioning of automatic transmissions, as it controls the hydraulic fluid flow necessary for the engagement and disengagement of gears. A low voltage condition in this circuit can be indicative of an electrical problem such as a short to ground, reduced voltage supply, or an issue within the solenoid itself. Low voltage can result in inadequate operation of Shift Solenoid E, potentially leading to transmission problems like improper g...

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