OBD-II & Electronic Engine Management Systems (96-on) Haynes TECHBOOK

Before buying this book, I bought "Automotive Diagnostic Systems: Understanding OBD I & OBD II," which is the other book that will probably show up if you are searching for books on this subject. In my opinion, this book (Haynes) is infinitely better. There is simply no comparison. In fact, I wish I hadn't wasted my money on the other book now that I have received the Haynes book. I have posted a review of the other book on Amazon. Now this book is more like it! While the other book was mostly theory and spent far too much time on the history of OBD, the regulatory aspects of it, etc., and was filled with meaningless charts and graphs and loaded with errors while not even showing a single picture of an actual sensor or an under-the-hood" picture, this book (Haynes) is what someone who works on cars really needs. It is loaded with pictures of the actual sensors, showing what they look like, where they should be located, how to diagnose them with tools besides just a code scanner (digital volt meters, vacuum gauges, vacuum tools, stethoscopes, etc.) This book is for people who don't want to just read a code but who want to get their hands dirty and fix the problem. The other book hardly mentions a word about fixing problems and it doesn't have a single picture of a sensor, where it should be located, etc. Instead, it just rambles on and on about theory to the point that one might get a headache. The Haynes book is a seat-of-your pants book that tells you exactly how to diagnose and fix problems. It's also much larger and covers a lot more information. In addition, it has an excellent glossary and index, unlike the other book. In short, the other book covers basically the history of OBD, theory, and so on while the Haynes book is far more practical. People who have worked on cars for many years like myself will get a kick out of how the Haynes book makes it clear that tools like vacuum gauges are still very useful while the other book casually mentions then in one sentence as if they are some kind of historical oddity. I was happy to see that I have almost every tool them mention in the Haynes book too. So don't throw away your vacuum gauge and other tools as the other book might suggest. I'm surprised at some of the negative reviews here for this book while the other book has better ratings, although far fewer reviews. Don't let that fool you. Get the other book if you want to have your eyes glaze over on meaningless 3D graphs that often have nothing to do with the accompanying text and seem to have been just thrown in to fill up space and you don't mind numerous errors in the text (my book is all marked up with corrections). On the other hand, if you want the background information AND hands-on instructions on how to actually diagnose and fix problems, this is the book for you. The differences in the book could be summarized by saying that the other book talks about OBD theory while this book shows you how to actually use a scan tool and fix problems you may encounter. Nothing is perfect, however. The only faults I find with the Haynes book is that it's printed on cheaper paper - about a grade above newspaper grade - and the pictures are in black & white. But it has infinitely more practical information. In fact, when I finished the other book, I had learned a couple things but I knew nothing more about actually fixing problems. If you don't want to just read about theory but instead want to see what the senors look like, where they are located, how to diagnose problems, what tools you will need to fix them, etc., this is definitely the book for you. I highly recommend this book. I just wish I had bought it before buying the other book.

Amazing. There is so much helpful information on troubleshooting problems that a normal Haynes vehicle specific is lacking that I would argue that you would be better off buying this and a decent obd2 scanner (Xtool A30M here) and skip the vehicle specific manual unless you are ASE certified. I feel Haynes expects you already know how to use specialty tools and I think it is just too much information and not enough explanation. This book is wonderful. I just got it yesterday and it's awesome. You can just blindly open to any section and bam you have learned something new, if you are a shade tree mechanic like me, a novice to a professional just brushing up on things to stay more efficient than the next tech. I told my mom this morning I wish I had this book years ago. I had to get rid of some nice cars that I couldn't afford to keep taking to a mechanic. I use that regret to fix things myself now and always tell people that I only ask for tools for presents because you will never regret having something that you might not use often but just like insurance you are glad it's there when you need it. This book will save you so much money.

This product was just received a few days ago. As I begin to read through it's pages, I'm impressed by the amount of information, both regarding OBDII, trouble shooting test equipment and how to use the mentioned test equipment. When you first order/receive this book, you think that it's going be all about OBDII scanner codes. Instead you find a rather complete information set regarding various test equipment and how to apply this gear to what's happening underhood. There's so much information regarding general test equipment and engine repair that I have to keep looking at the cover to see that indeed the book is about OBDII code scanners. Stating the obvious, today's automobile engines are far more technical than what us old guys worked on in the 50's and 60's. All this technology required abandoning the personal satisfaction of fixing one's vehicle troubles. This book helps bring an old shadetree mechanic up to speed with today's engine technology and between this book and an OBDII scanner, I once again can get back under the hood. After more time with this book, I'll post more impressions. I gave it four stars but only because I need more time with this book. In the interim, I can write that the amount of information in the few pages I've read, the book is well worth having. I might add that this book, without a doubt, makes for a fine inexpensive gift to give to a loved one who likes to do their own vehicle repairs. ----------------------------------------------- First addendum: I've now had time to spend a couple of sessions perusing the first five chapters of this book. The book is a veritable wealth of basic automotive information for both the novice and the more experienced. Chapter one and two are intro and warranty chapters. Chapter three is a nice primer on basic diagnostic tools and their use. Chapter four is a troubleshooting chapter which deals with a wide range of information on basic vehicle systems. This chapter starts with basic system checks and moves onto battery starting/charging, spark plugs, EGR/EVAP systems, to testing of vacuum systems, to troubleshooting. Wow! Chapter five deals with Powertrain management: fuel injection systems, fuel pumps, the "Powertrain Control Module" (PCM) and has a plethora of information regarding various sensors the OBDII system is dependent upon. Double wow! It's not until chapter six that the book finally starts to write about OBDII monitors. Lastly, all chapters come with lots and lots of annotated B&W photos to help the reader visualize what's being written about. More to follow, as I've had more time with the pages of this book.

ヘインズの本は値段の割にどれも中身が濃く参考になるが、この本も多くの内容が盛り込まれている。星４つとしたのは、コード一覧が欲しくて買ったが、それ以外の内容をまだ読んでいないためであり、内容は星５つに値すると思う（たぶん）。

Parfait comme toute cette série de livres techniques.

After purchasing my OBD II scanner I have found the book very useful because my knowledge about car enginneering is very limited. The book explains in simple way, together with the pictures, your vehicle engine and I can say that some problems can be solved on your own.

la buena información , de que dispone, muy necesaria , a la hora de colocar un escáner en el vehículo y poder interpretar los códigos.

If you've ever had the 'check engine' light come on in your vehicle you would know that having a system check at a garage could be very costly so I purchased the code reader first. Although most information can now be found on the internet this book contains helpful information on what needs to be done once you understand the code.