Mode 6 Archives - Brake & Front End
De-Coding Diagnostic Scan Tool Codes

I like to take full advantage of the codes the manufacturers offer. One of the ways to do that is to understand what all those letters and numbers represent that are in a diagnostic trouble code. Each of the five digits actually has a purpose and can make the job of diagnosing a vehicle’s problem much easier for import technicians if they understand the breakdown of the code’s letters and numbers.

Tech Feature: Controller Area Network (CAN) Bus Topology

At the typical repair shop, six-year-old vehicles (and there are 184 million of them on the road today) are some of the most common vehicles driving into the bays. And, since these vehicles are out of warranty, they will fuel service opportunities for the aftermarket and require more attention from independent repair shops like yours. In particular, one growing service area is diagnostics, especially as it relates to the expanding electronic content in today’s vehicles.

Training Tip: Maximize Use of Your Scan Tools

Delphi combines the importance of education and scan tools by providing training courses such as its Gasoline Powertrain Training Seminar Series, which specifically incorporates diagnostic scan tools for troubleshooting and diagnosis. The following courses are examples of Delphi’s scan-tool-related offerings.

Ford Reflash Tech Tip: PC Settings

So, you’ve just finished up a Ford, and you’re about to try and start it up. However, it needs programmed. You’ve decided to use a J2534 tool, but there are certain things you’ll need to consider before purchasing that subscription at

Tech Feature: Making $ (Money) with Mode $06

Mode $06 is one of the nine diagnostic modes that is part of the OBD II on-board diagnostics system on all 1996 and newer vehicles.

Tech Feature: Predicting Failures Through Mode $06

The PCM has several diagnostic modes. Depending on your scan tool and your use of it, you may get to see some or all of these modes. Also, depending on your scan tool, you may be accessing the various modes in the PCM without referring to them as “modes.”

What is Mode $06 and the other OBD II Modes?

OBD II modes are organized into nine categories, each of which is assigned a particular mode number preceded by a $ sign to symbolize the hexadecimal code it represents.

Mode $06 Diagnostic Update

Mode $06 has been around since the introduction of second-generation onboard diagnostic (OBD II) systems back in the mid-1990s. Essentially, Mode $06 is the raw test data the OBD II system uses to evaluate the operating status of various components in the engine management and emission control systems

Predicting Failures

spect that at one time or another, we’ve all had a customer return with a check engine light on with a new fault code that wasn’t there last time they were in. The events probably went something like this: Customer: “You couldn’t see that when you looked at it last time?” Shop: “No ma’am, there’s

OBD II Diagnostics: Checking into Mode $06

In this scan tool diagnostics article, we take a look at Mode $06 functions which govern non-continuous monitors (EVAP, catalyst, EGR, etc.)

Checking into Mode $06

Mode 06 is the actual system test data that OBD II looks at when it decides to set a pending code or a current fault code. If the test data is within the limits established by the vehicle manufacturer, the item gets a PASS and no codes are set. But if a value is out of range, OBD II flags it with a FAIL and keeps an eye on the component until the system monitor has run at least twice. Then, if the problem is still there, a DTC is set and the MIL light comes on.