About my car

20

Asked by May 20, 2017 at 07:35 PM about the 2005 Chevrolet Impala SS

Question type: Maintenance & Repair

I have a SS Impala 3.8 and I was driving it
and all of a sudden it died. When I tried
starting it it would start but wouldn't stay
running. So I bought a acron pocket
scanner and two codes came up PO103
and PO442 the first one is mass airflow
sensor high input and the second one is
EVAP canister.  My husband tried cleaning
the mass airflow with a cleaner but it
didn't help. But he said if he was me he
wouldn't spend the 350 to buy those parts
until he knew for sure that was the
problem. But if it's throwing those codes
what else could it be.

4 Answers

82,215

P0103 CHEVROLET - Mass or Volume Air Flow Circuit High Input...Possible causes: Faulty mass air flow sensor, Intake air leaks, Dirty mass air flow sensor, Dirty mass air filter, Mass air flow sensor harness is open or shorted, Mass air flow sensor circuit poor electrical connection...Possible symptoms: Engine Light ON (or Service Engine Soon Warning Light), Engine stall, Engine running rough, Excessive fuel consumption, Excessive smoke... Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

1 people found this helpful.
78,185

I'm with your Husband. I hate throwing parts and money at a problem! Most likely cause of the P0103 code is faulty wiring going to the mass airflow sensor. So carefully inspect that wiring and the mass airflow sensor plug. The P0442 code is a small leak detected in the EVAP system. This could be the gas cap, or any area of the EVAP system. Try removing and reinstalling the gas cap. Clear the computer (PCM) and see if the code comes back. If it does you'll need to have a smoke test done on the EVAP system. A small leak may not be able to be seen with the naked eye. But the smoke test will show you where it's leaking. Concentrate on the P0103 code first. The P0442 code will not make the engine not run. But the P0103 code can make the engine not run. HTH. -Jim

20

Replaced mass airflow sensor and it runs good again. Thank you for your input.

2 people found this helpful.
78,185

Awesome! Glad to hear that! Thanks for letting us know! -Jim

Your Answer

Impala

Looking for a Used Impala in your area?

CarGurus has 25,692 nationwide Impala listings starting at $900.

ZIP:

Chevrolet Impala Experts

  • #1
    Js08016
    Reputation
    2,350
  • #2
    Tom Demyan
    Reputation
    2,150
  • #3
    Rowefast
    Reputation
    1,940
View All

Related Models For Sale

Used Chevrolet Malibu
461 Great Deals out of 50,170 listings starting at $2,111
Used Dodge Charger
250 Great Deals out of 32,949 listings starting at $2,000
Used Honda Accord
449 Great Deals out of 102,532 listings starting at $800
Used Nissan Maxima
207 Great Deals out of 17,149 listings starting at $1,900
Used Chrysler 300
318 Great Deals out of 19,435 listings starting at $1,500
Used Toyota Camry
768 Great Deals out of 71,356 listings starting at $1,200
Used Buick LaCrosse
213 Great Deals out of 11,864 listings starting at $1,500
Used Nissan Altima
714 Great Deals out of 69,652 listings starting at $950
Used Ford Fusion
564 Great Deals out of 61,051 listings starting at $800
Used Chevrolet Silverado 1500
1,808 Great Deals out of 149,640 listings starting at $444
Used Ford Mustang
256 Great Deals out of 36,838 listings starting at $2,500
Used Chevrolet Tahoe
551 Great Deals out of 36,694 listings starting at $1,299
Used Ford Taurus
177 Great Deals out of 15,832 listings starting at $981

Used Cars For Sale

2018 Chevrolet Impala For Sale
18 Great Deals out of 7,310 listings starting at $19,650
2017 Chevrolet Impala For Sale
91 Great Deals out of 4,446 listings starting at $13,491
2016 Chevrolet Impala For Sale
32 Great Deals out of 935 listings starting at $10,968
2015 Chevrolet Impala For Sale
35 Great Deals out of 1,769 listings starting at $10,988
2014 Chevrolet Impala For Sale
56 Great Deals out of 1,723 listings starting at $8,436

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.