Back to all

On Board Diagnostics for Tiffin Motorists

September 6, 2020

Some Tiffin vehicle owners wonder why Courtesy Auto Repair Plus and other Tiffin auto repair shops charge a fee for vehicle diagnostics.

Receiving a diagnostic charge at Courtesy Auto Repair Plus for a tricky automotive problem shouldn't be a surprise. In the Tiffin area, automotive diagnostics can cover quite a range. If you hear a noise in your vehicle brakes when you slow down in rush-hour traffic on a busy Ohio road, you pull off at the next off-ramp and take a quick visual check. That is usually enough to know what needs to be done. If you're having an intermittent problem with your vehicle engine, however, a Courtesy Auto Repair Plus diagnosis may be much more involved.

Much of the Tiffin driver's confusion comes when the problem involves the Check Engine light. The Check Engine light comes on when the engine management computer has sensed a problem.

There's a common misconception among Ohio drivers that the trouble code tells the Courtesy Auto Repair Plus technician exactly what's wrong. They wonder why there is a diagnostic charge because the scanner quickly gave the diagnosis.

In reality, it is not that easy and straightforward. The computer monitors many sensors throughout the vehicle. When one of these sensors has a reading that's out of parameters, the computer will record a trouble code and turn on the Check Engine light.

The vehicle computer's trouble code just tells the Courtesy Auto Repair Plus technician what engine parameter is out of range, not what's causing it. The technician needs to determine the underlying problem that's causing the malfunction.

There are many problems that could cause a troublesome sensor reading for Courtesy Auto Repair Plus customers. The service advisor makes a list of the most likely causes and begins tracking down the source of the problem. This takes time.

Tiffin service centers subscribe to databases that document possible causes for all the possible trouble codes. The databases outline procedures for confirming a diagnosis and provide the documented repair. These  databases are specific to each vehicle and engine combination.

Some diagnoses are quick and easy. Others are more involved, time-consuming and difficult. Of course Courtesy Auto Repair Plus wants to figure out what's wrong with your vehicle and get you back on the road as quickly as possible.

Courtesy Auto Repair Plus
967 Bon Air Ave
Tiffin, Ohio 44883
419-443-0797
http://www.courtesyautorepairplus.com

More articles from Courtesy Auto Repair Plus

Smooth Moves

September 20, 2026

Stop for a moment and think of whats holding that heavy engine that sits under your vehicles hood to your vehicles frame. Your engine weighs hundreds of pounds, so its a big burden on those things that are holding it in place. Same is true for what holds your vehicles transmission in place. The... More

Steer Clear (Power Steering Pump Replacement)

September 13, 2026

When it comes to ease and precision of steering, todays vehicles are engineering marvels. One of the keys to just how good steering is lies in the refinement of power-assisted steering which we know simply as power steering. At the heart of the system is an electrically or belt-driven power ste... More

Start Me Up

September 6, 2026

You have a nice road trip planned out. Youre all packed, sit down in the drivers seat, go to start your vehicle up and Nothing! You might hear a click, but thats it. What do you do now? Your problem may be a bad ignition switch. There are other symptoms you may notice. A failing ignition swi... More