P0685Medium Priority
ECM/PCM Power Relay Control Circuit/Open
Category: Powertrain• Computer and Auxiliary Outputs
12 articles · 1 makes affected
Root Causesfor P0685
Based on 2 owner reports
What Didn't Help
Repairs that owners tried but didn't fix the issue
driven for 1-2 days
Things to Check
Suggested areas to investigate based on similar cases
fuel cap" warning
DIY Diagnostic Guide
Tools Needed
OBD Scanner
DIY Diagnostic Checklist
Based on 2 owner reports
Progress0%
Tools Needed
OBD Scanner
Step 1check: fuel cap" warning
Owner Statistics
Based on 76,407 real owner discussions • 2834 confirmed solutions
$1,509
Average Repair Cost
4%
Success Rate
23%
DIY Repairs
76,407
Data Sources
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
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