Code Definition

P0617 — Starter Relay Circuit High

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

About P0617

P0617 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 P0617 is stored, the module has detected a signal or supply voltage higher 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 P0617 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 P0617 fault code is set when the Engine Control Module (ECM) detects a higher than expected voltage in the starter relay circuit. The starter relay is an essential component in the vehicle's starting system, acting as an electrical switch to control power flow from the battery to the starter motor. When the ignition key is turned, the starter relay activates to engage the starter motor, which in turn starts the engine. A high voltage condition in the starter relay circuit can indicate an electrical problem, such as a short to power, a malfunctioning relay, or issues with the wiring or conn...

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