About AutoFixCodes
Engineering-grade OBD2 diagnostic troubleshooting and repair guidance.
Our Mission
Modern vehicles are sophisticated computer networks on wheels, containing over 70 electronic control units (ECUs) and miles of CAN-bus wiring. When the Check Engine Light (MIL) illuminates, motorists are often confronted by ambiguous codes, predatory repair estimates, or generic automated content that recommends throwing expensive parts at the problem without proper testing.
AutoFixCodes was created to bridge the gap between complex OEM factory service manuals and everyday vehicle owners. We provide empirical, step-by-step diagnostic workflows based on voltage waveform analysis, multimeter resistance checks, and real-world technical service bulletins (TSBs).
Editorial & Technical Standards
Every trouble code guide published on AutoFixCodes adheres to rigorous technical standards:
- Empirical Verification: Multimeter resistance specs, sensor pinouts, and live scan tool PIDs are cross-referenced against official manufacturer technical documentation (e.g., Toyota TIS, Ford PTS, GM Service Information).
- Root-Cause Prioritization: Rather than listing every theoretical cause, we rank failure modes by real-world field frequency reported by technicians.
- Component Testing Before Replacement: We strictly discourage the "parts-cannon" approach. Our guides require testing electrical circuits and sensor telemetry before recommending component replacement.
- Transparent Repair Costs: Cost ranges are compiled from national parts supplier databases (RockAuto, OEM parts channels) and standard Mitchell 1 / AllData flat-rate labor times.
The Diagnostic Team
Our content is authored and reviewed by automotive technology professionals with hands-on experience in dealership and independent repair environments. Contributors hold certifications from the National Institute for Automotive Service Excellence (ASE) in Engine Performance (A8), Electrical/Electronic Systems (A6), and Advanced Engine Performance Specialist (L1).
Editorial Inquiries & Corrections
Noticed a revised TSB or have technical data to contribute? Contact our technical editorial desk at support@autofixcodes.com.