Starter Relay Circuit High
The DURAMAX-P0617 (Duramax) diesel fault code means: Starter Relay Circuit High. This is a moderate severity code.
- Keep driving?
- Yes, with caution
- DIY difficulty
- intermediate
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What Are the Symptoms of DURAMAX-P0617?
- Check Engine Light on
- Engine may not crank, or the starter may stay engaged
What Causes DURAMAX-P0617? (Most Likely First)
- Starter relay control wire shorted to voltage High
- Failed starter relay Moderate
- Open in the relay coil circuit Moderate
Can I Still Drive with DURAMAX-P0617?
Yes, with caution. DURAMAX-P0617 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0617 mean on a Duramax?
P0617 means Starter Relay Circuit High. The voltage on the starter relay control circuit is higher than expected, which usually points to an open circuit or a short to voltage.
Is P0617 a Duramax-specific code?
No. P0617 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions GM uses to set it on its diesels are in GM service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose DURAMAX-P0617?
Check the starter relay and its socket.
Check the relay control circuit for an open or a short to voltage.
Check that the engine computer commands the relay correctly when cranking.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P0617 as a generic OBD-II code)
P0617 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
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