Read/Leave Feedback

Welcome to the feedback page where you can post feedback (at the bottom of the page) and read feedback about ScannerDanners book and ScannerDanner Premium.

Book EnginePerformanceDiagnosticts 320

Mr.Paul I appreciate your program. I am 19 currently enrolling in a Diesel Trade School. 2 Years on hands on experience and will be graduating this December. I finally enroll into your premium channel and bought your book. First thing I learn is omg there is a lot to learn from lol. I have proposed to go section by section and have you as a class with the premium channel. I appreciate your help and you been a great inspiration. I have worked with many guys and the question that I always had is how did you know that was the problem? The mechanical side many awnser me with the correct answer, but on the electrical diagnostic side the 100% answer was idk. I soon realize that many of them were parts changers. The worse decision I considered I can ever make is guessing and not knowing what you actually are working on. I don't want to be a parts changer. That is the reason I always try learning something from your videos I can actually fix the problem correctly. I hate parts changer. Here in Marshall Tx in East Texas that is what it consist of. Im glad we have internet now bc without I wouldn't find you. Thank Mr.Danner ill be enroll in your premium for a good while. You are a true mentor. Sincerely_ Jose Julian Serrano

Jose Julian Serrano
5 July 2019

The book is fantastic, fully loaded and a Blessing to the automobile repair industry, my only issue is that I can only get access to the premium channel video's only when I am either in America or Canada, no access from my home country Nigeria. How can your support guys help?.

5 July 2019

I signed up because I am a Technology Education teacher who teaches in a district that luckily still values teaching Automotive/transportation Technology. I wanted to best prepare my students for whatever training the go forward with after high school. What I have learned has been worth every penny. In addition I do side work custom wiring race cars and street rods. What I did not expect is how much cross over there is and how much it has helped me in this area with so many computer data loggers and more and more digital ignition controls and EFI even in the performance industry. Thank you for sharing your knowledge.

Bill M
2 July 2019

Peter from kenya how can i join class at rosedaletech.

Peter Otieno
2 July 2019

jr neff
21 hours ago

fact I went to Nashville auto diesel 2001 15k I learned the material now I a danner premium guy fixing a lot from his teaching. like a car or truck comes in late I kind of know what direction to go the next day so I watch mr danner premium channel at night bam the car is usually fixed with what I learned in less than a hr billed out the door if you own a car or truck worth the 11.00 to know how it works trust me it is going to break down DO YOU KNOW WHY. DANNER MAY BE ABLE TO TEACH YOU. thks paul

woodrow neff
29 June 2019


29 June 2019

GREAT INFO PAUL! I absolutely love love love the premium channel can't get enough of it you have taught me lots of valuable knowledge even for me being a heavy duty Diesel technician , It doesn't matter I work on literally everything.
Appreciate all the hard work you put in these videos ??

Chris gathe
28 June 2019

Hey Paul. Mustangmike here.I just wanted to say thanks for all your hard Professional work i learn a lot off your youtube videos which is were i started. I have been one of your online students since feb.This website is the best i just purchased your book through mail cant wait till it gets here very excited.

michael perkins
28 June 2019

Just finished the book and I was not disappointed! I found you about a month ago on you tube and I'm glad I did. between your you tube videos and the book I feel confident tackling projects I never would have before (like my abs light. Found a bad speed sensor using my Rigol scope! not bad for an electrician).
Thanks for all the hard work. I know you do it for more than "the money". Cheers from cape cod.

sandy mclardy
28 June 2019

Excellent work professor. Thank u. I ran into this 2014 lexus es350 the other day with no A/c operation. This compressor had three separate connectors going to it and to get to these connectors is not easy without saying a whole lot of curse words ??. So I checked for a relay and there's is none. Its internal to the box and I couldn't use my uactivate ??. Now the fun part begins ??. Checked for codes in the HVAC module and a code for "flow sensor" circuit high. Now we are getting somewhere. While In there I checked for other inputs such as evap temp, ambient temp and so on. All looked good except the flow sensor sensor pid which read 3.65 volts. Bi directionally I can command the ac to turn on and off. While doing that I was looking at the flow sensor pid while on and no change. Stayed at 3.65. Alldata didn't have info on this sensor nor a good description or operation. I talked to a buddy and he told me that this sensor is internal to the compressor. Some models u can get away with replacing the sensor but not this one. Computer will not send the signal if it sees anything less than 3.7 volts and i had 3.65 all the time.To the computer it means that some type of flow is going on. All in all with the compressor changed out and looking at the pids again..... the flow sensor pid read 4.5 or 4.8 I dont remember , with the compressor not engaged and with it engaged it dropped to 1 volt. Thought I can share my experience with u even though this little piece of information doesnt even compare not even a little with all u shared and taught all of us. U truly are right professor when u say " just with basic principles and fundamentals u can attack any system". You and ur SD premium really changed my life. God bless

Jason Chavez
26 June 2019

hi Danner ma man, your content is second to none m8, in which I have learnt a lot from so that's great, a little pointer on your website to help you out, the layout isn't the best, you need a layout like you did on you tube i.e how you had actual physical sections for each chapter of your teaching were you could click on and view each individual lesson description and content all in front of you and in order without having to search it on your search bar. the search bar is great if you know what you are looking for but if your trying to go from the start of your lessons to the end it can be quite difficult. hope this helps and once again thank you from a mechanic in Scotland

ScannerDanner's reply:
Thanks for the constructive feedback, I am constantly working behind the scenes to improve the site. If you look at the format of Chapters 2 through 8 you will find them to be organized in a way that I believe has good flow. It is complete with descriptions and related videos etc.
I am also adding descriptions to all of the older videos that were moved over in a group from YouTube (about 250 videos). There are many and this is a timely process but we are getting it done with some help from viewers like you!
Also, I do have a dated playlist, maybe you haven't seen it. It is in the drop-down menu of the ScannerDanner Premium tab, it is a "new videos" list. Every video since Nov of 2017 is in this list (when I first moved over from YouTube).

19 June 2019

. i just watched that video, same exact arcing and sticking problem. i used a different set of leads and no more problems. in that video you were looking for your 5 volt ref and your leads were shorted internally and giving you a bad reading. your check engine light was back on so you tried to crank the car while still connected to one of the 5 volt ref circuits. and the whole time im watching (knowing that your leads were bad ) im thinking man , hes shorting the 5 volt ref , its never gonna start and then you realized your leads were bad and went on to explain exactly that . "that you were pulling that 5 volt ref all the way down. "
And honestly man , 2 years ago i didnt even know a 5 volt reference existed, now , i understand the concepts and the theory and have the fundamentals to see the problems and issues just as fast as you come across them. i thank YOU for that mr. danner, and im sure that there are countless, countless others who feel the same way . thanks for everything man. we really appreciate it!!

Patrick reaves
11 June 2019

I became a recent subscriber and it’s completely worth the cost no matter what direction you chose to take with the invaluable knowledge you will gain from his teaching. If you make a career fixing cars you’ll inevitably earn 2x as much money or you will save hundreds of dollars fixing your own car. Either way, you will win! Thanks so much Paul!

10 June 2019

Hi PaUL JUST BOUGHT your ebook is there a way to download as i dont always have internet when in the field im from the uk hope to here from you soon regards Dean Lawson

ScannerDanner's reply:
There is no download or PDF option for my eBook, I understand this doesn't work for everyone, but this format does allow me to offer refunds and exchanges. View the content, make sure it is what you are looking for and if it is, I can apply the cost of the eBook toward the paper book or just simply refund the eBook for you. Thank you! For others reading this, email me at to handle this type of stuff.

8 June 2019

As a DIYer I love scannerdanner (Paul Danner's) videos and online forum, and I own both versions (hardcopy and digital) of his book, which have paid for themselves MANY times over. Here is just ONE repair I recently completed which saved me FAR more money than the cost of the scannerdanner materials: Some say that for airbag problems you HAVE to have a $5,000+ high-level scan tool. I don't. But I learned on the repair forum that there are inexpensive dongles you can get that plug into the car's ALDL and will interface with an app on a smartphone that will give you quite a bit of airbag code information and PIDs as well as many for other codes you used to need a high-level scan tool for. To fix my son's airbag problem on his 2005 Ford Taurus SEL, I bought a -recommended dongle for about $15.00 and an app for $4.95. I did need help confirming that my understanding of the code data was correct, as well as some guidance on digging into the steering column to fix it. All that help and guidance I got on the web forum graciously provided by Paul Danner and his outstanding mods. I was able to fix the airbag light, saving my son hundreds of dollars over a dealer repair; and the experience of doing the repair was a tremendously personally rewarding. I have ten children and seven vehicles in the driveway. I have lost count of the number of repairs I have been able to complete on these vehicles myself, with the help of scannerdanner's materials, saving me tons of money. Thank you PAUL!

4 June 2019

Hello, I have a 98 Ford Taurus 24V DOHC. It cranks but no start. As I am cranking, the RPM gauge does not move. I hooked up my scanner and it told me there was a problem with the cam synchronizer, but I don't see a cam sync on this engine. I see a sensor in front of the timing cover, on the radiator side. Is this the cam sensor? I tried registering, but it didn't allow me after numerous attempts. If you can help me through this page, Id really appreciate it.
Thank You
God Bless

ScannerDanner's reply:
As you've probably now figured out, this feedback page does not support a conversation, please post this to my forum. We can definitely help you there and it is free to join.

Al Herrera
3 June 2019

Nashville auto diesel student 2001 came out not knowing cause they didn't teach the basics I had a 2000 chevy the instructor didn't know how to get my change oil light off a joke when I was there know I am older and knocking down 5 cars a day and 1 tractor I decided to get more training and scanner danner has it bam

woodrow neff
2 June 2019

Why are making Pay Pal the only options for paying subscription to your training. Not, everybody, wants to join Pay Pal. What about other options, like your debit card, bank account & etc.

ScannerDanner's reply:
My eBook and paper book can be purchased without a PayPal account.
The ScannerDanner Premium subscription service is handled by PayPal and unfortunately is the only way to subscribe. This offers you the customer, the ability to be in complete control of your subscription. PayPal is one of the most trusted on-line services and is free to create an account. You can link any credit card you have to it or even a pre-paid card if that is your preference. I hope you can make this work for you. Thank you for your interest!

Samuel Joseph
1 June 2019

hi Paul ScannerDanner :))
I am teaching your studies from your YouTube channel almost 2 years and I get some fundamentals understandings about autoelectrical basics and today make decision start follow you on your Premium channel …
your knowledge as a teacher is mining so much to me and all the people followed you on YouTube and join the Premium channel …
As a mechanic by trade I need to learn more about electrical involve in the vehicles and your study are full with all kind of electrical going into the cars.
Regard from Australia Melbourne and big thanks to you Paul Danner ...have a good one ..Vane Eftimov

1 June 2019

gloria 2019-05-12 21:09

This is Mike G. from south Texas.
I am a construction worker in the refineries with no diploma or GED, make great money but I love mechanic work and helping people on the side.
I would love to mechanic full time but need to learn as much as I can before I make the jump, so my family will not suffer in my chasing my mechanic dream, knowing I will drop in take home money at first.
This premium channel gives me a chance to take courses that I would never be able to take, at my home and at my own pace. These courses are helping me understand. One day I will get my Diploma or GED so I can get my ASE classes.
This video made total sense for fuel trims.
thank you for what you do, and make it easy to learn.

Mike Gloria
26 May 2019

Guys I have been watching Danner for a few years on YT. I am about to buy his text book. I work as a heavy equipment field tech and as we all know cars and machines are getting more complicated as far as electronics go.

If you're not willing to fully understand electrical diagnosis you will have a hard time in this field. I just can't begin to explain how much danners material has helped me. There is no greater joy than going out to a job that other mechanics have spent lots of time on and still haven't fixed it. Then you show up, and pin point the issue quickly and methodically and have it up and going.

The instant gratification you get from a sewing a customer happy that their machine is fixed is my drive to get better. I'm even shopping for a scope!! That's the next thing I'm going to add to my electrical troubleshooting arsenal.

Danner is a badass tech as well as a top notch teacher.

Adam Savage
16 May 2019

For the money you can,t beat Paul's teachings. He is a great guy and a great teacher. He will bring you from knowing nothing about diagnosing modern vehicles electrical systems and operational theory to understanding them in no time. You can follow along with his students at Rosedale Technical College for a fraction of the cost. He even brings you along with him on real live cases studies in the field. As a added benefit if your having a problem understanding system/problem on a car you can even seek great advice on his forum. What more can you ask for, at a really affordable price. I've been following Paul for over five years and the information and knowledge I have gained is priceless ! Thank You Paul !

14 May 2019

The Book and the website have helped me to open my eyes and think out of the box on everything I diagnose and repair. Every diag tech green or seasoned should have the book.Thank you.

Richard Harders
6 May 2019


ScannerDanner's reply:
As you can see, this is the feedback page of my website and does not offer the ability to reply and communicate with each other, this is what the forum is for, please post your automotive questions to my forum, it is free to join. Thank you!

30 April 2019

Been looking to update my older modis scope for awhile and watching you and others use the pico was impressive. As with some other youtube producers, I try to compensate them for the help I received.

But what really enticed me to make the purchase of a pico scope from AES was the included SD premium subscription . Great idea to bundle the two together!
Thanks and look forward to digging in

Kevin J Ingalls
30 April 2019

2008 Hyundai accent hatchback 4 cylinder 1.6 engine Automatic. 99,000 miles
It cranks but wont start. I put in a fuel pump, 4 spark plugs, 4 coils, crankshaft sensor, camshaft sensor and replaced the battery.
I ran a autel scanner but only gave me sub codes $7EF and $7E9 A/T. I don't know what else it could be. I'm thinking ECM???

ScannerDanner's reply:
As you can see, this is the feedback page of my website and does not offer the ability to reply and communicate with each other, this is what the forum is for, please post your automotive questions to my forum, it is free to join. Thank you!

Larie N Bolton
29 April 2019

In an electrical engineer that was working and due to a bad injury 3 years ago was out of the force for a little while...
Getting back to the working phase and trying a different path ( working on the ground) this time.. Started customizing cars and started to enjoy it. I repaired a few cars for friends and they were happy ( made money) too, lol.
I also do residential electrical repairs and maintenance for customers also .... Little profile of myself, lol..

Do you have a specific meter you use or ( ideal or fluke mutimeter).. I'm old school, I use a little scope, meter, jumpers signal substituting.. Nothing fancy... Recommendations on mutimeters....

ScannerDanner's reply:
As you can see, this is the feedback page of my website and does not offer the ability to reply and communicate with each other, this is what the forum is for, please post your automotive questions to my forum, it is free to join. Thank you!

David Figueroa
21 April 2019

Hello Danner and all,
Newb to premium, but not to electronics, or auto mechanics. I signed up for the trial, and i just wanted to poke in to say that I am never looking back. There is such a wealth of information here, that I feel it would be silly to do so. If youre on the fence, you can feel confident, and jump on in. Even if you never end up doing this type of work as a professional, the skills you will learn, even more, UNDERSTAND, are worth so much more than the price of entry. Keep up the fine work, and look forward to everything this website has to offer. Thank you for making it available

Travis Wasko
15 April 2019

This guy. Knows his stuff. Super smart thanks !!!!!!!!!

5 April 2019

hello Paul my question to you is simple . Do you know if it is a tools that combines DDM/OSCILOSCOPE/SCANNER all in one . I am just trying to decide on what type of equipmet to buy. I am interested in become a diagnostician like you. I know easy to write but extremely hard to achieve. I barely started reading about about cars. I will greatly appreciate if you can explain about scan tools and how to decide what to buy depending on specific needs. thank you . God Bless

ScannerDanner's Reply:
As you can see, this feedback page does not offer the ability to reply. Please post these types of inquires to our forum. It is free to join! Thank you!

edgar lopez
5 April 2019

Hey scannerdanner,
Thank you for taking the time to make these awesome videos and supplying testing and diagnostic strategies to the auto field, I have learned a lot from your videos and knowledge!
I was wondering if you had a case study about analyzing MAP sensor data (signals/voltage) waveforms using the Pico? I have watched your Hummer videos and they where great. However I am having trouble analyzing MAP signals to isolate valve issues or misfires due to engine mechanical faults. If no case studies,Do you know of a resource that I could obtain MAP sensor analyzation information?
Thank you!

ScannerDanner's reply:
Thank you Anthony, as you can see, this feedback page does not offer a "reply" option. Post your questions to the particular video that it applies to, or to the forum and I will do my best to answer them. Thank you!

2 April 2019

If you’re on the fence on the book or premium dont be! I have been to automotive schools but i have never absorbed as much information as i have than with scanner danner’s book. I have my a6, a8 and L1 ase but i am still constantly learning from techniques from premium video subscription.

1 April 2019

Hello Paul ,

Code po430 that I committed about yesterday is fixed, Did not replace , didn’t clean or add lacquer thinner to fuel lol . After researching all possible issues, I was ready to replace it, I barrowed a friends scanner so I could use the training I learned here , found that the truck was running just a little on the rich side . So before I did anything else I cleaned throttle plate and MAF then started the truck and the code cleared it’s self instantly, in shock really I drove it while monitoring the fuel trims , STFT check out after about 50 miles or so LTFT went from - 13 ish on both banks to -5 /-7 ish still no check engine light and truck running great. Once again like to thank you sir, I am going to keep a close eye on this one but I feel the issue has been corrected.

Toby Rogers
25 March 2019

Hello sir,

Paul first things first absolutely best decision I have ever made is joining your premium channel I have never been more confident about the cause and diagnosis with the amount of time saving compared to before I began watching your videos .I am also currently dealing with a GM PO 430 code I have when through the material you have on the subject and I have also researched possible causes with nothing that stands out . Seeing how there’s not much information about the causes for cat failure and it is one of our companies field service trucks and I love a challenge figure I will take a stab at it . Conditions that I know , 2012 Chevy 3500 4x4 we bought it used with 82,000 miles in November, Came from Billings , Montana . We are located in Williston , ND . Currently 87,000 ( mileage estimate not exact numbers) when code activated temps changed from -20 averages to 30 degrees F . We generally use 87 octane fuel and add a 16oz can of sea foam at each oil change at monthly intervals during winter months truck idling most of the day and parked inside at night . Since this is the first time I have delt with this code and there’s no other codes, engine is solid runs and pulls great . Waiting on my scanner to come in the ol snap on pro link quit me lol dang cold weather so I will update ya as I learn more. If you have any suggestions or ideas I would definitely like to hear them ! Sorry about the length of comment it is the short version of what I would like to write ! Snap On needs to develop a Danner Scan/Scope LOL ! Anyway sir again thank you for taking time to share your knowledge, A tool all mechanics should have in there box is your book and join premium.


Toby Rogers
24 March 2019

I am a self employed mobile diagnostic mechanic and ecu reflash / programmer. I did an apprenticeship in the UK ?? and left with a distinction. I was a patrol with the RAC and have been self employed for over 15 yrs. I believe in education and personal improvement to be the best I can for my customers. I have been watching premium for 3 months now and can honestly say I have learned more there than a 5 yr apprenticeship and the style of classroom with live car fault finding really helps to demonstrate as well as give the background theory in a clear way. I’m here to stay keep up the great work and I love the ebook too study at my pace perfect. Thanks Paul and Caleb the camera guy.

Stephen Hayes
13 March 2019

Hello Paul,

I have been watching your YouTube channel for a couple of months and have learned a lot , you explain electrical systems better than any that I have ever seen look forward to learning a great deal more . I work mainly with natural gas converted Diesel engines , have been a mechanic for last 20 years deal with a wide range of equipment semi truck to duel fuel and natural gas generators.Have never been very good with electronics . I would also like to say that the only thing that I don’t like about the ebook is that I can not move it to my iBooks where I keep all my diagnostic book is it possible to get a refund on it if not I understand , that being said I will be purchasing the paperback version. Thank you for your time and instruction looking forward to expanding my knowledge with the premium channel !


Thanks so much Toby! As you can see this feedback page does not offer replies to comments. I have no problem at all for a refund of the eBook and or an exchange with the cost going toward the paper book. Email me at and I can handle that for you personally. Thanks again!

Toby Rogers
12 March 2019