P0617 Starter Relay Circuit High

P0617 indicates a high condition in the starter relay circuit. The starter relay command or feedback voltage is above the expected range.

Code details

Generic OBD-II · P0

System: Computer
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not keep attempting starts if the starter relay circuit appears stuck energized or backfed.

Symptoms of P0617

Check-engine light, sometimes with several unrelated codes at once.
Warning lights, a no-start, or intermittent electrical faults.
Communication or module-reset problems on a scan tool.

Common causes of P0617

Low battery voltage, poor grounds, corroded connectors, or blown fuses.
Wiring or network (CAN bus) faults between modules.
A module software/programming issue, or rarely a failed controller.

Useful checks before replacing parts

Review starter relay command, feedback voltage, driver status, start request data, park or neutral status, immobilizer authorization, and freeze-frame data.
Inspect for short-to-voltage faults, stuck relay contacts, open grounds, connector corrosion, damaged wiring, and incorrect relay installation.
Verify whether the circuit is stuck high key-on, only high during crank request, or backfed from another starter circuit.

Related OBD-II codes

These nearby computer entries can help compare wording and pin down the fault area.