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

149,455

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.

149,455

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 1,674 nationwide Accord listings starting at $1,995.

Postal Code:

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
70 Great Deals out of 1,795 listings starting at $2,000
Used Honda Civic
167 Great Deals out of 4,965 listings starting at $399
Used Nissan Altima
63 Great Deals out of 1,518 listings starting at $710
Used Honda Accord Coupe
16 Great Deals out of 246 listings starting at $2,990
Used Nissan Maxima
19 Great Deals out of 394 listings starting at $3,677
Used Toyota Corolla
130 Great Deals out of 4,244 listings starting at $2,288
Used Honda CR-V
63 Great Deals out of 2,875 listings starting at $1,999
Used Acura TL
15 Great Deals out of 226 listings starting at $3,800
Used Hyundai Sonata
43 Great Deals out of 1,679 listings starting at $3,500
Used Dodge Charger
49 Great Deals out of 935 listings starting at $3,995
Used BMW 3 Series
148 Great Deals out of 2,362 listings starting at $950
Used Toyota Avalon
6 Great Deals out of 220 listings starting at $2,888
Used Chevrolet Malibu
56 Great Deals out of 1,700 listings starting at $449
Used Kia Optima
37 Great Deals out of 968 listings starting at $4,995

Used Cars for Sale

2018 Honda Accord For Sale
9 Great Deals out of 392 listings starting at $26,550
2017 Honda Accord For Sale
12 Great Deals out of 132 listings starting at $17,900
2016 Honda Accord For Sale
10 Great Deals out of 133 listings starting at $17,950
2015 Honda Accord For Sale
10 Great Deals out of 216 listings starting at $12,888
2014 Honda Accord For Sale
9 Great Deals out of 132 listings starting at $9,490

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.