RV Diagnostics, Instantly

Your RV
expert is
always on.

Ask Mr. Tod anything about your RV — electrical, plumbing, HVAC, appliances. Get straight answers in seconds, not days.

✓ Owner $10/mo  ·  ✓ Technician $20/mo  ·  ✓ Cancel anytime

MR. TOD
👤
My AC is running but not cooling at all
🔧
Check these first Sounds like a refrigerant or airflow issue. Check your return air filter — if it's clogged, that'll kill cooling fast. Also make sure your roof vents aren't blocked.
👤
Filter looks clean, vents are clear
🔧
OK — next thing to check is your capacitor. That's the most common cause when the fan runs but you get no cold air. Easy $20 fix if that's it.

No hold times.
No guessing.

Describe what's wrong and get a real answer — the kind a good tech gives you in the shop.

01

Describe the problem

Type what's happening in plain English. "My water pump hums but no water comes out." That's enough.

02

Get a real answer

Mr. Tod walks you through likely causes and what to check — in the right order, without the fluff.

03

Fix it or know what's next

Either handle it yourself or go to a tech knowing exactly what the problem is and what it'll take.


Built for the field,
not the office.

Whether you're a weekend warrior or running a fleet, Mr. Tod works the way you do.

For Professionals
RV Technicians & Dealerships

Speed up diagnostics, train new staff, and get deep technical data — fault codes, wiring guidance, and step-by-step procedures without hunting through manuals.

Fault code lookup & interpretation
Wiring & schematic guidance
Step-by-step repair procedures
Onboard new techs faster
For RV Owners
RV Owners & Full-Timers

Stop waiting on hold or paying diagnostic fees just to find out it was a loose wire. Get plain-English answers right where you are — campground, driveway, or roadside.

Works on any phone
Plain-English explanations
Electrical, plumbing, HVAC, appliances
Available 24/7, even off-grid

Trusted in the field.

★★★★★

"Figured out my converter issue in 10 minutes. Would have been a $200 shop visit."

🏕️
Dave M.
Full-time RVer, Arizona
★★★★★

"We use it to walk customers through basic checks before they even bring the rig in. Saves everyone time."

🔧
Karen T.
Service Manager, RV Dealership
★★★★★

"My new guy uses it constantly. It's like having a senior tech in his pocket while he's in the bay."

🛠️
Rick L.
Independent RV Tech, Texas

Pick your plan.

Two tiers, built for who you are. Less than a single diagnostic fee either way.

🔧 Technician
Pro Tier
Technician Plan
$ 20 /mo

Everything in Owner, plus deep-tech tools.

  • Everything in the Owner plan
  • Fault code lookup & DTC interpretation Tech
  • Wiring & schematic guidance Tech
  • Step-by-step repair procedures Tech
  • Higher usage limits & priority depth
  • Photo attachment for visual diagnosis
Get Started – $20/mo

First 3 questions free — no card needed.

Stop guessing.
Start fixing.

Your first three questions are on us.

Try Mr. Tod Free →