Stop the Check Engine Light Lottery.
Your vehicle isn't dead. You are just one factory schematic away from bypassing predatory diagnostic fees and saving thousands of dollars.
The moment a dashboard warning light clicks on, panic sets in. Dealerships and local repair shops count on that panic so they can charge you $150 to $200 just to plug an OBD scanner in—followed by a bloated, terrifying estimate for parts you don't even need.
Stop wasting your weekend hunting through YouTube videos that don't match your exact engine vin family. Trying to dig through internet forums or car groups for diagnostic help? You'll wind up completely stranded once a dozen self-proclaimed backyard mechanics start arguing over their 'theories' in the comments. You'll end up completely confused, replacing parts that aren't broken, and draining your hard-earned wallet.
But we don't just cover troubleshooting complex error codes. Need direct, step-by-step help with routine vehicle care? Whether it's changing filters, executing clean oil changes, performing structural brake replacements, or pulling up the exact required maintenance intervals for your model—we have you covered. Anything your automotive heart requires to keep your vehicle running flawlessly, we have your back.
Up to 80% of common driveability, mechanical, and electrical maintenance faults are completely field-serviceable right in your driveway. You don't need a new car payment, and you don't need to be at the mercy of a service writer. We deliver the un-scrubbed, direct factory telemetry data instantly. No monthly subscription traps. Get immediate access to OEM sensor wiring pin-outs, brake caliper torque values, fluid capacities, real-time live data fuel trim thresholds, component reference charts, and exact electrical troubleshooting trees.
Enter your Vehicle Year, Make, Model, and OBD Code or Symptom below to run an intentional, professional proving plan.
Terms of Service
Safety acknowledgment
Safety. Repairing machinery involves lethal electrical, gas, and mechanical risks.
I accept 100% liability for any injury, property damage, or death resulting from repairs performed using Field Cortex guidance or tools.
Field Cortex is a software tool, not a licensed human technician. The final judgment and all work performed on equipment rests solely on the user.
Dispute resolution
I waive all rights to a jury trial, lawsuits, or class-action suits against Field Cortex and its operators.
Mandatory mediation in Carroll County, Georgia, USA, is required for any legal dispute before other remedies may be pursued.
Service scope
Truth Shield™ and related diagnostics are educational logic tools. They do not replace manufacturer service bulletins, code compliance, or local licensing requirements.
High-voltage, gas, refrigerant, and sealed-system work must follow OEM lockout/tagout and applicable NEC / local code.
Privacy & billing
ALL SALES ARE FINAL. Due to the digital nature of the Field Cortex Truth Shield™ software and the immediate delivery of diagnostic logic, no refunds will be issued once the software is accessed or a diagnostic plan is unlocked.
Payments are processed by Stripe. Session consent timestamps and audit records may be retained for legal and fraud-prevention purposes.
Privacy Policy
Privacy Policy
Field Cortex LLC collects session identifiers, equipment brand/model context, payment metadata (via Stripe), and consent timestamps to operate Truth Shield™ diagnostics and maintain legal audit records.
We do not sell personal data. Logs may include IP address and coarse geo for fraud prevention and dispute resolution under our Terms.
Contact support@fieldcortexai.tech for data questions.
Safety Disclaimer
Safety Disclaimer
DIY repair involves electrical, gas, refrigerant, and mechanical hazards. You are solely responsible for lockout/tagout, PPE, and code compliance.
Field Cortex provides software logic only — not on-site service. High-voltage and sealed-system work require qualified training.
By using this tool you accept full liability for injury, damage, or loss arising from repairs you perform.