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Catalytic Converter Tech Feature: Diagnosing P0420 or P0430 DTCs

Although modern OBD II technology has simplified catalytic converter diagnostics, it's still important to understand the basics of catalytic converter operation when dealing with a P0420 or P0430 DTC. Gary Goms explores the basics of catalytic converter chemistry and summarizes how common converter failures can be diagnosed. More

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. More

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. More

Tech Feature: Boosting Profits Through Turbocharger Services

A turbo's basic purpose is to boost power, so when an otherwise healthy engine suddenly becomes anemic, it often (but not always) means turbo trouble. More

Tech Tip: Loss of Power Assist to the Chrysler Minivan

During high humidity climate conditions, some Chrysler, Dodge or Plymouth vehicles may experience a momentary loss of power assist for the steering when turning corners with the A/C or defroster on or recently on. This Tech Tip describes two repair procedures depending on the diagnosis. More

Tech Tip: Honda MIL Comes On

The MIL comes on with one or more of these evaporative DTCs stored: P0451 (FTP sensor circuit range/performance problem); P0452 (FTP sensor circuit low voltage); P0453 (FTP sensor circuit high voltage); P1454 (FTP sensor circuit range/performance problem). More

Tech Feature: Acquiring Data on Scan Tools, Part II

Technical contributor Gary Goms discuss the importance of choosing the right scan tool, using scan tool database systems, graphing data, storing data for future use, analyzing scan tool data and using bi-directional controls. More

Tech Feature: Engine Technology Gets a Boost

As a technician, you'll need to understand how Ford's EcoBoost turbocharged gasoline direct injection engine works, since the automaker plans to incorporate it in 90% of its new vehicles over the next three years. More

Tech Feature: Curbing Catalytic Converter Thefts

Catalytic converters have been disappearing at an alarming rate. The theft of these emission control devices is being perpetrated by sleazeballs looking for easy money. A thief can hock a pilfered converter for $25 to as much as $100 depending on the value of the precious metals inside it. More

Directions: Turbocharging’s Not Just A Lot of Hot Air

In a recent study of U.S. consumers by Honeywell, more than half of those who plan to purchase a vehicle in the next two years believe fuel efficiency is more important than it was during their last vehicle purchase. More