Starter Relay A Circuit High
What it means
P0617 means the ECM detected high voltage on the starter relay control circuit. Because this relay energises the starter, a fault here can cause a no-crank or no-start condition. It is most often a bad relay or a wiring problem, with the ECM being the least likely cause.
Can I keep driving? May not crank or start — if the engine won't turn over, don't keep trying; get the starter relay circuit checked.
Real-world scan data
Appears alongside · share of P0617 scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Engine does not start
- No-crank condition (starter does not engage)
- Intermittent or delayed cranking
- Check-engine light on
Common causes
Most likely first
- Faulty starter relayLikely
- Corroded, open, or short-to-voltage wiring in the relay control circuitCommon
- Poor connection at the relay socket or groundCommon
- Failed engine control module (ECM), least likelyLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and confirm the relay control circuit reads high.
- Swap or bench-test the starter relay to rule it out (often interchangeable with another relay).
- Inspect the relay control wiring and connector for corrosion, opens, or a short to voltage.
- Verify the ECM is grounding the relay control circuit when start is commanded.
- Repair the wiring or replace the relay, then re-test starting.
FAQ
Quick answers
Is it safe to drive with P0617?+
Can I just clear P0617?+
Related codes
Read & clear P0617 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.