How can the computer not be able to diagnose car problem?

Asked by Jul 06, 2017 at 12:48 PM about the 2009 Honda Accord

Question type: Maintenance & Repair

A few years ago the starter of 2009 accord was replaced. As
I pulled out of repair shop, check engine light came on.  For
personal reasons, I don't trust them and went to the station
down the street who said something way down at the
bottom (of the engine???) was disconnected and would be
involved to reconnect but they did it.

After that, strange things have been happening.  The car will
only drive at 20mph or so, check engine light blinking.  Car
has no power to go up hills. At other times, VAS and solid
check engine light come on and car drives normally.

Car can go for months with blinking check engine light on
and car will not go above 20 mph & can not be used.  Then
it will act normally with no lights on for a period of a couple
of hundred miles or so.

Computer spits out codes, parts are replaced but car still
blinking.  How can the computer not know???  One time it
will say parts need to be replaced, the next time it will say
theses parts don't need to be replaced.

Is it possible for no one to diagnose a car?

5 Answers

149,165

Codes have to be interpreted as they can be caused by more than one thing. If you can post the codes and what has been done we can try to help.

Part of the problem is that the codes don't seem to be accurate. Was told code showed replacement part would be $2,000, they ordered part, because of price they said they would recheck codes before replacing. Got phone call with good news, code shows its not that after all. Nothing shows up as being wrong. Was told Car Had No Issues. And As Usual The Same Pattern Happens. Car Fine, No Check Engine Light on And Car Drives Normally For A Short Period Of Time. Then Blinking Check Engine Light Comes On, Car Will Drive too Slow To Drive IN traffic.. The WEirdest Thing Is That In the same Day It Can Blink And Not Be Usable At One Time That Day And Later in same day No Light And Drives Normally And Another Time vSA Light And Check Engine Light Together. This must be a clue that it can go back and forth like this in the same day How Can It Work Normally with No Check Engine Light At One Time During The Day And Later Blink And only Crawl A!ong? Its My Only Car, I Lost My financial support and can't get another car. Live where a car is a necessity. How can more than one mechanic not figure this out. Crank sensor was replaced and cam sensor. Didn't make any difference Thank you. I'm hoping someone out there likes a challenge and can help.

149,165

I think you should look for a better mechanic.

Hey bro just seen this and words can’t explain how what’s happening to your 09 Accord is happening to mine same exact scenario. Code p0339 for crankshaft popped up goes away and comes back also 2 misfires fixed all of it only code that still comes back is crankshaft code. Replaced the sensor and the wiring is fine. Keeps coming back. That’s the problem. Was wondering if you ever found a fix to your problem?

If you end up seeing this and have the answer I’d strongly appreciate if you can email me what fixed it if any possible way, thanks. Colonalex14@yahoo.com

Your Answer:

Accord

Looking for a Used Accord in your area?

CarGurus has 86,047 nationwide Accord listings starting at $1,200.

ZIP:

Honda Accord Experts

  • #1
    JP1956
    Reputation
    2,550
  • #2
    Jonathan Ford
    Reputation
    1,870
  • #3
    dandyoun
    Reputation
    1,800
View All

Related Models For Sale

Used Toyota Camry
1,266 Great Deals out of 76,836 listings starting at $795
Used Honda Civic
963 Great Deals out of 53,157 listings starting at $1,299
Used Nissan Altima
1,349 Great Deals out of 66,382 listings starting at $1,503
Used Honda Accord Coupe
122 Great Deals out of 3,444 listings starting at $1,500
Used Nissan Maxima
433 Great Deals out of 17,674 listings starting at $1,094
Used Toyota Corolla
1,053 Great Deals out of 65,930 listings starting at $1,290
Used Honda CR-V
879 Great Deals out of 75,177 listings starting at $1,700
Used Acura TL
106 Great Deals out of 3,317 listings starting at $1,699
Used Hyundai Sonata
712 Great Deals out of 47,918 listings starting at $1,200
Used Dodge Charger
609 Great Deals out of 29,798 listings starting at $1,200
Used BMW 3 Series
999 Great Deals out of 28,552 listings starting at $1,300
Used Toyota Avalon
208 Great Deals out of 11,339 listings starting at $1,490
Used Chevrolet Malibu
852 Great Deals out of 53,444 listings starting at $977
Used Kia Optima
496 Great Deals out of 29,811 listings starting at $1,995

Used Cars for Sale

2018 Honda Accord For Sale
70 Great Deals out of 42,087 listings starting at $17,787
2017 Honda Accord For Sale
174 Great Deals out of 4,399 listings starting at $13,595
2016 Honda Accord For Sale
178 Great Deals out of 5,076 listings starting at $10,981
2015 Honda Accord For Sale
246 Great Deals out of 3,732 listings starting at $9,398
2014 Honda Accord For Sale
74 Great Deals out of 1,925 listings starting at $6,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.