Starter Relay Circuit
The P0615 code means the vehicle's onboard diagnostic system has detected: Starter Relay Circuit. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $50 - $500 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Vehicle may not start or starter stays engaged
- Reduced system performance
- Warning indicators on dashboard
Probable Causes (Ranked by Likelihood)
- Faulty starter relay Very High
- Wiring damage or corrosion in the circuit High
- Poor electrical connection at module or component Moderate
- ECM or control module internal failure Low
Step-by-Step Diagnostic Procedure
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Use a scan tool to read data related to Starter Relay
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Inspect all related wiring, connectors, and grounds for damage, corrosion, or loose connections
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Measure circuit voltage, resistance, and continuity to identify the fault type
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Check for technical service bulletins related to this code for your specific vehicle
Common Fixes by Vehicle
What techs usually find when diagnosing P0615 on specific vehicles — tap your vehicle for the fix and the exact part:
2003-2014 Chrysler/Dodge Vehicles (300, Charger, Ram) easy DIY
Replace starter relay in the TIPM (Totally Integrated Power Module). Chrysler TIPM is notorious for internal relay failures -- some models accept socketed relays but most require TIPM replacement or bypass modification. Check forums for year-specific TIPM part numbers.
Labor: 30 min2004-2016 GM Full-Size Trucks/SUVs easy DIY
Replace starter relay in the under-hood fuse box. GM starter relays are standard Bosch-style 30A -- pull and swap with a known-good relay (headlamp relay) to verify. Cheap fix if confirmed.
Labor: 15 min2007-2018 Nissan Altima/Maxima hard DIY
Check IPDM (Intelligent Power Distribution Module) for failed internal starter relay. Nissan IPDM is under the hood on driver side. Can be repaired by re-soldering relay contacts if you have soldering skills, otherwise IPDM replacement required.
Labor: 2 hoursFrequently Asked Questions
What does P0615 mean?
P0615 indicates a fault in the starter relay circuit. This is an electronic control system code that affects the ECM's ability to manage the associated component or system.
Is P0615 a serious code?
This is a moderate concern that should be diagnosed soon but may not prevent driving short distances.
Can a low battery cause ECM-related codes?
Yes. Low battery voltage can cause various ECM and module communication codes. Always verify the battery is fully charged and the charging system is working before diagnosing electronic control module codes.
Sources
This page is built from documented references. Verify against your own service info before repair work.
P0615 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
See All Codes & Fixes for Your Vehicle
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