ASE Certified Master Technicians
Remote Automotive Diagnostics Without the Guesswork.
Get experienced diagnostic support when a vehicle problem is difficult, intermittent, or simply not making sense. DiagMasters provides live remote diagnostic guidance for repair shops and DIY vehicle owners nationwide.
When You Are Stuck
Got a vehicle nobody can figure out?
Stop replacing parts based on guesswork. Work through the problem with an experienced technician and determine the next logical diagnostic test.
- Check engine lights
- Electrical faults
- CAN Bus problems
- No-start conditions
- Drivability problems
- Intermittent failures
- Wiring problems
- 20+ Years Experience
- Live One-on-One Support
- Nationwide Remote Support
Simple, Straightforward Pricing
Start with a focused consultation. If additional diagnostic time is needed, you can continue from there.
Start Here
Remote Diagnostic Consultation
$49
- Up to 20 minutes with an ASE Certified Master Technician
- Review of symptoms and diagnostic history
- Review of scan-tool data
- Guidance through appropriate diagnostic tests
- Recommended next diagnostic steps
Follow-Up
Follow-Up Diagnostics
$39
- Follow-up 20-minute consultation within 3 days of initial consultation.
Additional Time
Advanced Diagnostics
$30
- Per additional 10 minutes if more time is needed after initial consultation.
Additional diagnostic time is only needed when more time is required to continue the diagnostic process. A separate invoice will be sent to you upon approval, you will not be billed automatically.
ASE Certified
Master Technicians
20+ Years
Diagnostic Experience
Live Support
One-on-One Consultation
Nationwide
Remote Diagnostic Support
Professional Diagnostic Help When You Need It
DiagMasters provides remote diagnostic guidance for both automotive repair professionals and vehicle owners. The goal is simple: identify the next logical diagnostic step before unnecessary parts are replaced.
For Repair Shops
- Think of DiagMasters as an experienced diagnostic resource available when your shop encounters a difficult vehicle.
- Difficult diagnostic problems
- Electrical and wiring faults
- CAN Bus communication issues
- Intermittent problems
- Second opinions
- Advanced drivability concerns
For DIY Vehicle Owners
- Get professional diagnostic guidance before spending money on parts that may not solve the problem.
- Check engine lights
- No-start conditions
- Electrical problems
- Drivability concerns
- Battery drains
- Custom projects and engine swaps
What Can We Help Diagnose?
From difficult electrical faults to no-starts, drivability problems, and CAN Bus communication issues, DiagMasters provides remote diagnostic support when conventional troubleshooting has reached a dead end.
Engine & Drivability
- Troubleshoot engine performance problems and determine what should be tested next before replacing additional parts.
- Check engine lights
- No-start conditions
- Rough running & hesitation
- Misfires
- Fuel trim problems
- Turbo & VVT problems
Electrical & Wiring
- Find difficult electrical faults involving power, grounds, wiring, voltage drops, shorts, opens, and intermittent failures.
- Electrical faults
- Voltage drops
- Parasitic draws
- Wiring problems
- Power & ground faults
- Charging system problems
CAN Bus & Module Communication
- Investigate communication failures, network faults, and situations where multiple vehicle systems suddenly stop communicating.
- CAN Bus faults
- Multiple warning lights
- Dead instrument clusters
- Module communication failures
- Network problems
- Intermittent communication faults
Vehicle Systems
- Diagnose problems involving transmission, ABS, SRS, HVAC, cooling, EVAP, and other electronically controlled vehicle systems.
- Transmission problems
- SRS & airbag faults
- Cooling system problems
- ABS & traction control
- HVAC problems
- EVAP faults
Custom Projects & Engine Swaps
- Get diagnostic and wiring guidance for custom builds, engine swaps, OEM harness modifications, and standalone ECU applications.
- Engine swaps
- OEM harness modifications
- Standalone ECUs
- Wiring integration
- Custom electrical systems
- Diagnostic troubleshooting
How Remote Diagnostics Works
A straightforward process designed to help you move from symptoms and diagnostic information toward the next appropriate test.
Book
- Book a remote diagnostic consultation with an experienced technician.
Connect
- Connect through a live remote consultation and explain the vehicle's symptoms.
Diagnose
- Review scan data, testing results, wiring information, symptoms, and the diagnostic process.
Repair with Confidence
- Use the diagnostic findings to make a more informed repair decision.
When Should You Get Diagnostic Help?
Remote diagnostic support can be especially useful when basic testing has not identified the cause or when you want an experienced second opinion before replacing additional parts.
Check Engine Light
- A trouble code identifies a system or condition, but additional testing may be required to determine the actual cause.
No-Start Condition
- The engine cranks but will not start, or the vehicle has an intermittent starting problem.
Electrical Problem
- You have a fuse, wiring, power, ground, voltage drop, or intermittent electrical problem that is difficult to isolate.
Multiple Warning Lights
- Several systems suddenly report faults and you suspect a shared power, ground, communication, or network problem.
Intermittent Failure
- The vehicle works normally sometimes and fails at other times, making the problem difficult to reproduce.
Parts Have Already Been Replaced
- Parts have been replaced without resolving the underlying problem and you need another diagnostic perspective.
Why DiagMasters?
Modern vehicle diagnostics require more than reading a diagnostic trouble code. Our approach focuses on understanding the system, testing the suspected cause, and determining the next logical step.
ASE Certified Master Technicians
- Consultations are provided by experienced technicians familiar with advanced automotive electrical, engine management, and drivability diagnostics.
20+ Years of Experience
- Decades of hands-on experience diagnosing electrical, intermittent, engine performance, and communication problems.
Logical Diagnostic Process
- We use symptoms, scan data, wiring information, live data, electrical testing, and logical diagnostic strategies.
Electrical & CAN Expertise
- Advanced electrical diagnostics are a major part of the service, including wiring, voltage drops, power and ground circuits, and communication networks.
Support for Repair Shops
- Get an experienced second opinion when your technicians encounter a vehicle that has resisted conventional diagnostic procedures.
Remote Nationwide Support
- Work with a technician remotely without needing to transport the vehicle to another facility for the initial diagnostic consultation.
Difficult Problems. Real Diagnostic Solutions.
See how DiagMasters has helped repair shops work through difficult diagnostic problems without unnecessary parts replacement.
2015 Chevy Silverado Starts Then Dies
- Vehicle would start for a few seconds and then die. There were no diagnostic trouble codes stored, and a fuel pump had already been replaced without solving the problem.
Root Cause:
- Clogged Catalytic Converters
2009 Toyota Camry Hard Brake Pedal & Apparent ABS Activation
- A difficult brake problem appeared to involve the ABS system. Multiple components had already been replaced without solving the problem.
Root Cause:
- No brake booster vacuum caused by a plugged intake manifold vacuum port.
2019 Kia Sportage CAN Bus Communication Fault
- Repair shop received vehicle with multiple communication faults and a dead instrument cluster. Kia dealership had previously replaced cluster but the original problem remained.
Root Cause:
- The blind spot module had failed internally and was causing CAN Bus communication faults.
What to Have Ready
The more information you can provide, the more efficiently we can work through the diagnostic process. Don’t have everything listed below? That’s okay. We’ll work with the information and equipment you have available.
Vehicle Information
- Year, make, and model
- Engine size or engine code
- Recent repairs or maintenance
Diagnostic Information
- Diagnostic trouble codes (DTCs)
- Scan-tool data or screenshots
- Warning lights or messages
- Symptoms and when they occur
Testing Already Done
- Tests you have already performed
- Measurements and test results
- Parts that have already been replaced
- What changed after each repair
Equipment Available
- OBD-II or diagnostic scan tool
- Digital multimeter
- Test light or other test equipment
Don't have professional diagnostic equipment?
- That's okay. Many consultations can begin with the symptoms, diagnostic codes, basic measurements, and information you already have. We'll help determine what should be tested next.
Frequently Asked Questions
How does remote vehicle diagnostics work?
Remote diagnostics allows you to work with an experienced technician through a live consultation. You’ll explain the symptoms and share available scan data and testing results while the technician guides you through a logical diagnostic process.
What equipment do I need?
A smartphone or tablet, internet access, and an appropriate OBD-II scanner are useful for many consultations. Depending on the problem, additional testing equipment may be necessary.
Can you diagnose a check engine light remotely?
Many check-engine-light problems can be investigated remotely using diagnostic trouble codes, live data, symptoms, and guided testing. The exact diagnostic process depends on the vehicle and condition that caused the light to illuminate.
Do I need an OBD-II scanner?
An OBD-II scanner is strongly recommended for many diagnostic consultations because modern vehicles provide valuable information through their diagnostic systems. The scanner required depends on the vehicle and problem.
Can you program modules or perform software updates?
We specialize in diagnostics, troubleshooting, and repair guidance. Programming, immobilizer functions, and software updates generally require manufacturer-specific equipment and are not part of our standard remote diagnostic service.
Can you help with custom engine swaps?
I'm an independent shop owner. How can you help?
We provide on-demand diagnostic support when your technicians need a second opinion on difficult electrical, drivability, intermittent, or communication problems.
What if you can't determine the problem remotely?
Some problems require specialized equipment or physical inspection. If remote testing isn’t enough to establish the cause, we’ll explain what additional testing or equipment is needed so you can take the next appropriate step.
Will you diagnose European vehicles?
We primarily support domestic and Asian vehicles. We may be able to assist with some European vehicles depending on the make, model, year, diagnostic equipment available, and the specific problem. Contact us before booking if you’re unsure.
Is my information private?
We take customer privacy seriously. Please review our Privacy Policy for information about how personal information is collected, used, stored, and protected.
Stuck on a Difficult Vehicle?
Questions Before Booking?
About DiagMasters
Modern vehicles are more advanced than ever, with multiple computer modules, complex wiring, CAN Bus communication networks, and sophisticated engine management systems.
Proper automotive diagnostics require more than simply reading a diagnostic trouble code. A code can identify the system reporting a problem without identifying the actual component or condition that caused it.
DiagMasters provides remote diagnostic support for repair shops and vehicle owners nationwide. Our ASE Certified Master Technicians have more than 20 years of hands-on experience diagnosing difficult electrical faults, check engine lights, drivability concerns, intermittent no-start conditions, charging system problems, CAN Bus communication issues, wiring problems, and engine performance concerns.
During a live consultation, we’ll review symptoms, interpret scan tool data, explain diagnostic procedures, and help determine the next logical step using the tools and information available to you.
Our goal is to help repair shops and vehicle owners make informed diagnostic decisions, reduce unnecessary parts replacement, and approach difficult vehicle problems with a logical testing strategy.
