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Canadafix, Canadian Class A
Category: Chevy
Satisfied Customers: 1632
Experience:  Have owned/operated an automotive repair shop for the last 19 years working on all makes and models of vehicles
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2007 Chevy Malibu: traction control service light came..gears

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I have a 2007 Chevy Malibu and the other day the traction control service light came on and now it is shifting hard when going into drive and the first few gears. My husband cleaned the mass air flow sensor with the sensor cleaner and replaced it after it was completely dry and he also checked the voltage on the map sensor and everything seems to be at the right voltage. Can you help me figure out what is wrong??
Welcome to Just Answer.

To begin, is the check engine light on?
Any other symptoms?
Is the speedometer working correctly?

Thank you,
Customer: replied 4 years ago.
yes the check engine light is on and just today when we started the car it was idling funny but other than that the speedometer is working fine.
Hello Sheena.

Thank you for your reply.
So sorry about the delay.

I see your husband went to the mass air sensor. Was there a reason for this?
Did you get the code that turned on the check engine light?

Thank you,
Customer: replied 4 years ago.
He works at autozone so he put the car on the tester and it gave him several codes and they were reading the map sensor and the mass air flow sensor plus some codes that were around the fuel pump area. My husband has been looking around and he read that the sensor should not be dirty cause it could cause issues so he decided to clean it and see if it helped at all but nothing changed.
Hello Sheena.

Do you have the specific codes that were gathered?
If you can supply me with them I may be able to piece together the puzzle for you.

Thank you.
Customer: replied 4 years ago.
If you give me just a minute I think they are in the car let me go check
Sure thing!
Customer: replied 4 years ago.
ok this is what I found that my husband wrote down


That is exactly how they were wrote down in that order
Hello Sheena.

That's quite a list!

Give me a little time to put it together and see what I find.

Thank you kindly for your patience.
Customer: replied 4 years ago.
no problem I'll be here!
Hello Sheena

HO2S Heater Control Circuit Bank 1 Sensor 1

HO2S Heater Control Circuit Bank 2 Sensor 1

HO2S Heater Resistance Bank 1 Sensor 1

Mass Air Flow (MAF) Sensor Circuit Low Frequency

Evaporative Emission (EVAP) Purge Solenoid Control Circuit

While I put the rest of this together, check the under hood fuse marked Emission 1, Fuse #6-10 amp. It may be blown.

Thank you,
Hello again.

Here is what I suspect has happened.
That fuse has blown or it is not being supplied with power.
If the fuse has blown, one of the circuits that the code has set on has a short circuit.
Replacing the fuse will most likely result in the fuse blowing again,
Each one of these items will need to be checked until the short is located.

I'd suspect the canister purge solenoid and the oxygen sensors first.

Canadafix and 3 other Chevy Specialists are ready to help you
Customer: replied 4 years ago.
Thank you so much the fuse was blown and it has helped the transmission from shifting hard at the moment and the traction control is on again. I will have my husband check the short asap...thank you so much once again!!
Hello Sheena.

Glad to help out.

Let me know if you need a hand to locate the short.


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