U3003
OBD Code U3003
1 articles · 1 makes affected
Root Causesfor U3003
Based on 24 owner reports
Confirmed Causes
- 1consistently making power(8% of cases)
Common Misdiagnoses
What owners initially thought vs. what actually fixed the problem
- worst idea. i picked a placegoing to bring the car there and have a worker replace(2 reports)
What Didn't Help
Repairs that owners tried but didn't fix the issue
actually going onad or if they were just trying to get me to buy one. it onlydead but it just kept turning over and not actually going onworst ideagoing to try and fix it i’m just curious)
Things to Check
Suggested areas to investigate based on similar cases
engine light constantly and has several codesengine light on at this timeengine light stays onengine light will make this happenfor parasitic drainhad the same issue but then did this atrocious wiring shown above
DIY Diagnostic Guide
Tools Needed
MultimeterOBD Scanner
DIY Diagnostic Checklist
Based on 24 owner reports
Progress0%
Tools Needed
MultimeterOBD Scanner
Step 1check: engine light constantly and has several codes
Step 2check: engine light on at this time
Step 3check: engine light stays on
Step 4check: engine light will make this happen
Owner Statistics
Based on 397 real owner discussions • 46 confirmed solutions
$1,273
Average Repair Cost
12%
Success Rate
33%
DIY Repairs
397
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.