About my car

20

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

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

87,135

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.
81,405

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.
81,405

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

Your Answer:

Impala

Looking for a Used Impala in your area?

CarGurus has 868 nationwide Impala listings starting at $2,894.

Postal Code:

Chevrolet Impala Experts

  • #1
    Js08016
    Reputation
    2,430
  • #2
    Tom Demyan
    Reputation
    2,410
  • #3
    Rowefast
    Reputation
    2,060
View All

Related Models For Sale

Used Chevrolet Malibu
40 Great Deals out of 1,794 listings starting at $1,995
Used Dodge Charger
36 Great Deals out of 918 listings starting at $2,939
Used Honda Accord
38 Great Deals out of 1,652 listings starting at $3,490
Used Toyota Camry
36 Great Deals out of 2,122 listings starting at $2,450
Used Nissan Maxima
337 listings starting at $3,800
Used Chrysler 300
45 Great Deals out of 1,028 listings starting at $4,495
Used Buick LaCrosse
4 Great Deals out of 299 listings starting at $6,994
Used Nissan Altima
39 Great Deals out of 1,194 listings starting at $1,600
Used Chevrolet Tahoe
10 Great Deals out of 784 listings starting at $5,900
Used Ford Mustang
45 Great Deals out of 1,253 listings starting at $4,685
Used Ford Fusion
39 Great Deals out of 1,749 listings starting at $3,600
Used Chevrolet Silverado 1500
102 Great Deals out of 11,132 listings starting at $4,950

Used Cars For Sale

2018 Chevrolet Impala For Sale
229 listings starting at $21,995
2017 Chevrolet Impala For Sale
10 Great Deals out of 183 listings starting at $17,777
2016 Chevrolet Impala For Sale
30 listings starting at $15,995
2015 Chevrolet Impala For Sale
3 Great Deals out of 35 listings starting at $14,999
2014 Chevrolet Impala For Sale
49 listings starting at $13,495

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.