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Asked: Nov 07, 2009 - 03:55 PM

Status: Open

I have a 2005 Chevy Cobalt and my engine light is on.

I replaced everything that deals with the emissions for the car for inspection and the list of parts I replaced are:

1. Evap Purge Valve
2. Evap Vent Valve
3. Tank Pressure Sensor
4. Gas Cap
5. and one of the plastic lines on the tank

Anybody knows whats wrong let me know and yes I reset the light and drove about 100 miles and it still comes on.

In Makes & Models > Chevrolet > Cobalt
In Maintenance & Repair > Exhaust > Emissions
In Maintenance & Repair > Engine > Indicator Lights
2 answers - 13 days ago

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0patience

Date: Nov 07, 2009
Time: 08:16 PM

And the trouble codes that led you to throw parts at it, were what?

avatar

cgchevycobalt

Date: Nov 09, 2009
Time: 07:31 PM

the codes that come up on my car are
P0102 MAF or VAF A Circuit Low Input
P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0443 EVAP Emission Control System Purge Valve C Fault

I went to get it inspected and the inspection staion told me it failed the test due to the gas cap and i returned the next day with the gas cap and they told me that its not ready for inspection. And when i shut the car off the only codes come up are the P0102 and the P0443.
I changed them and the light is on and i asked the Service Station at the Chevy Dealer and they told me i have to get the codes reset and drive the car around and put any where from 50 to 200 miles on the highway and stop and go traffic area and the computer should be reset itself. Ill let you know how it goes after i get it reset.

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