Code Definition

P0512 — Starter Request Circuit Malfunction

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

About P0512

P0512 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 P0512 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 P0512 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 P0512 fault code is set when the Engine Control Module (ECM) detects a malfunction in the starter request circuit. This circuit is part of the vehicle's starting system, and it involves the communication between the ignition switch, the ECM, and the starter relay or solenoid. When the ignition key is turned to the start position, a signal is sent to the ECM, which then sends a request to the starter circuit to engage the starter motor and crank the engine. A malfunction in this circuit can lead to issues with starting the vehicle. Possible causes include problems with the ignition switch, ...

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