Check engine light came on with 2 ob2 codes

Tiny
MYCOLBOLT88
  • MEMBER
  • 2005 CHEVROLET COBALT
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 133,458 MILES
Hi. I have a 2005 Chevy Colbolt 2.2L 4 CYL motor automatic.

Today on 1/9/15 I had a full tune up( spark plus and spark plugs wires changed, complete oil change, tires rotated, state inspection, cabin and air filter replaced ).

I gave my mechanic the car with very little fuel in the tank. After I pick the car up I put Chevron TECHRON fuel injector cleaner into my gas tank with hardly any gas in my car.
Now I know that air must have built up into my fuel system. Right after I put the chevron TECHRON fuel injector cleaner into my gas tank with hardly and fuel I started my car and literally within 5 seconds my check engine light came on. I know my mechanic did nothing wrong with his service work.

Now Air/Fuel Ratio is a major factor in the cars fuel system running properly.
After I put the fuel injector cleaner into my car and the check engine light immediatley came on I went right to the gas station and put 1/2 tank of gas into my car.

I then took my own ( OB2 SCANNER I OWN) and scanned my car.

2 codes came up.

FIRST CODE IS ( PO 171 ) and it said ( BANK ONE SYSTEM TO LEAN ( HISTORY OF MILAGE ).
Now is this a direct result of putting the fuel injector cleaner into my car with hardly any fuel in the car causing the air/fuel ratio to be in properly operating normally?
This is the only thing I could imagine why this code came up and that's why my check engine light immediately came on 5 seconds after I started the car with hardly any fuel in the car and by adding injector cleaner into the gas tank.
( PLEASE TELL ME IF I AM CORRECT ON THIS CODE AND THE REASONING THIS CODE CAME UP ).
Because all it said on the code is ( BANK 1 SYSTEM TO LEAN---HISTORY OF MILAGE ).

Please let me know if I am correct on this otherwise give me your expert answer on this please.
According to my mechanic while doing a STATE INSPECTION EVERYTGING IS CHECK IN ORDER FOR THE CAR TO PASS A STATE INSPECTION. Please reply with you're expert answer please to this code and my opinion of why this code came up.


NOW THE SECOND CODE.

( PO 455 )
Said---- ( EVAPORTATIVE SYSTEM )
( LEAK DETECTED )
( GROSS LEAK/ NO FLOW )
( INTEMITTED )
Now where exactly where this leak be coming from on the Engine?
What does ( GROSS LEAK/NO FLOW ) mean?
What does ( INTENITTED ) Mean?

Please contact me back as soon as possible at my E-MAIL ADDRESS ( DM1341916@GMAIL. COM ). ASAP please reply.

ON MONDAY 1/12/15 I WILL BE BRINGING MY CAR BACK TO MY MECHANIC WHOM IVE KNOWN FOR 15 YEARS NOW.

PLEASE ANSWER MY QUESTIONS WITH YOUR EXPERT ANSWER AS DETAILED TO ME AS POSSIBLE PLEASE.

ALSO CAN YOU PROVIDE ME A LIST OF PARTS MY MECHANIC SHOULD ALSO CHECK IN GENERAL AND THAT HAS TO DO WITH THESE CODES PLEASE.

ALSO WHEN I DRIVE MY CAR UP A HILL IT SEEMS I HAVE TO PUSH MY FOOT DOWN HARDER ON THE GAS PEDAL TO ACCUMULATE MORE ACCELERATION AND GIVE IT MORE POWER. WOULD THIS HAS TO DO WITH CODE ( PO 455 )?

ASLO HOW DO I KNOW IF MY COLBOLT IS JUST A COLBOLT? COLBOLT LS? COLBOLT SS?

Please contact me back ASAP please.

Thank you very much,

--DAN

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Friday, January 9th, 2015 AT 5:42 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Dan:

Hi. The codes you have are somewhat common. However, I really question if the injector cleaner had anything to do with it.

The first code, lean mixture, can be caused by low fuel pressure or a vacuum leak. Since the vehicle was just worked on, there is a good chance a vacuum hose was bumped and disconnected. That can cause the lean mixture. Also, if the fuel tank was really empty, you may have damaged the fuel pump or the cleaner may have caused dirt to plug the pump or filter.

In this case, I would start with checking for engine vacuum leaks. If none are found, then I would check fuel pump pressure.

As far as the EVAP leak, let me start with an explaniation of the system. The EVAP is designed to prevent gas fumes from evaporating into the atmosphere. The system runs between the fuel tank and the engine. When there is a leak, pressure drops in the system and causes the light to come on. I would recommend that you have the EVAP system smoke tested to see if there is a leak. Also, and don't laugh, make sure the gas cap is tight. If it is loose, it will set a code. As far as the smoke test, at a very low pressure, smoke is injected into the EVAP system. If there is a leak, the smoke will come out and you will be able to see if.

Check these things out and let me know what you find.

Joe
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Friday, January 9th, 2015 AT 7:36 PM
Tiny
SATURNTECH9
  • EXPERT
Just to add to this one the 2005 cobalt is very much the same as the saturn ion so iam very familiar with them. The P0455 is usually a stuck open canister purge solenoid allowing vacuum to go to the gas tank the entire time the engine is running not just when commanded by the computer. That will set the p0455 because the computer sees a change in the fuel tank pressure sensor when it shouldn't. It can also set the p0171 from the vacuum going into the tank without the vent valve being closed.
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Saturday, January 10th, 2015 AT 2:22 PM

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