I came back from the store today with my girl freind and when I got in the car the "Service Engine Soon" light came on. I wanted to know what could this be. i just got the oil changed and the tranny flushed and changed. One thing is on my little dash over top of my head unit the change oil light keeps coming on. Can anyone help Im about to pop my top.

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Its Mr hear me befor you see me.
Im KING KONG!!!!!!!


"Why go slow when you can go fast?"

I would have no clue and won't until you find out for sure. Only way to know for sure is to have it scanned at your local Autozone or Advance Auto Parts.

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2012 Ford Focus SE Sport
2012 MINI Cooper Clubman

I have ADHD and drive a Focus. Ironically.
Although gold dust is precious, when it gets in your eyes, it obstructs your vision.

Did you recently get gas? Check your gas cap and make sure you have a tight seal. If you have a 10 year old car maybe getting a new one wouldn't be a bad idea.

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2005 Fusion Orange GT2,, K&N CAI, BA Speakers, Kenwood DVD 8019, BT, Sirius, Ipod adapters, Overkilled

my car dose not send a code when i have no gas cap on. don't know why but it dosen't

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Im going to see if its my gas cap. Then once I get off from work Im going to auto zone to get it scanned. Will keep you posted

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Its Mr hear me befor you see me.
Im KING KONG!!!!!!!


"Why go slow when you can go fast?"

Can we get a sticky put at the top that says something along the lines of 'if your SES light is on, we can't help you very much unless you have a description of what your car is doing and what the codes are'?

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1968 Firebird 400: Lookin for 11s
1998 GTP: parting out - click here >> viewtopic.php?f=24&t=8093&p=129200" onclick="window.open(this.href);return false;
1995 GMC 3/4 ton: Beasty to haul the toys
1999 GMC Jimmy: her daily driver
1999 Firebird: Tinker w/that later

Not trying to be funny but the subject line says service engine light is on. I dont know what the code is. I have went to auto zone to get it scanned. I just went outside and toke off my gas cap and put it back on. The light went off. But Im still going to go to auto zone to get it scanned.

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Its Mr hear me befor you see me.
Im KING KONG!!!!!!!


"Why go slow when you can go fast?"

have them read the history

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I meant no disrespect to you, but it was more mis-placed suggestion to the mods to put up a sticky asking people to please know what the code is when the SES light is on, because without that code, we can make simple guesses like the gas cap, but we can't make an educated guess at all. An SES can mean anything from your gas cap is loose to your motor is dead. The code is about all that'll tell us what the problem is.

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1968 Firebird 400: Lookin for 11s
1998 GTP: parting out - click here >> viewtopic.php?f=24&t=8093&p=129200" onclick="window.open(this.href);return false;
1995 GMC 3/4 ton: Beasty to haul the toys
1999 GMC Jimmy: her daily driver
1999 Firebird: Tinker w/that later

ummm, it actually is a sticky in this section ...
http://www.gpona.com/forums/viewtopic.php?t=566

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Went to auto zone and got it scanned. I got the light to go off but want to check it anyway. And this is the code that came up

P0171 - Fuel Trim System Lean Bank 1

Dude tried to explain it to me but he didnt know what the hell he was talking about so I told him never mind.

Does anyone know were this comes from? And how do you fix it?

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Its Mr hear me befor you see me.
Im KING KONG!!!!!!!


"Why go slow when you can go fast?"

To provide the best possible combination of driveability, fuel economy, and emission control, a closed loop air/fuel metering system is used. While in closed loop, the PCM monitors the HO2S 1 signal and adjusts fuel delivery based upon the HO2S signal voltage. A change made to fuel delivery will be indicated by the long and short term fuel trim values which can be monitored with a scan tool. Ideal fuel trim values are around 0%; if the HO2S signals are indicating a lean condition the PCM will add fuel, resulting in fuel trim values above 0%. If a rich condition is detected, the fuel trim values will be below 0%, indicating that the PCM is reducing the amount of fuel delivered. If an excessively lean condition is detected, the PCM will set DTC P0171.

The PCM s maximum authority to control long term fuel trim allows a range between -23% and +16%. The PCM s maximum authority to control short term fuel trim allows a range between -11% and +20%. The PCM monitors fuel trim under various operating conditions (fuel trim cells) before determining the status of the fuel trim diagnostic. The fuel trim cells used to determine fuel trim are as follows:

* VIN K Idle, purge commanded (Cell 10).
* Deceleration, purge commanded (Cell 1).
* Normal driving, purge commanded (Cell 2).
* Normal driving, no purge commanded (Cell 6).
* Idle, no purge commanded (Cell 9).

* VIN 1 Idle, purge commanded (Cell 10).
* Normal driving, purge commanded (Cell 2).
* High flow driving, purge commanded (cell 4).
* Normal driving, no purge commanded (Cell 6).
* Idle, no purge commanded (Cell 9).

The vehicle may have to be operated in all of the above conditions before the PCM determines fuel trim status. The amount that fuel trim deviates from 0% in each cell and the amount that each cell is weighted directly affects whether or not the vehicle must be operated in all of the cells described above to complete the diagnostic.
Conditions for Running the DTC

* No VSS, TP sensor, EVAP system, HO2S, Misfire, IAT sensor, MAP sensor, Idle speed, Fuel Injector(s), IC/Bypass, EGR Pintle, EGR Flow, ECT sensor CKP sensor CMP sensor, or MAF sensor DTC(s) set.
* Engine coolant temperature between 20

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This should help.

http://www.obd-codes.com/p0171

This could just be because your gas cap was loose.

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Previous: '99 GTP 246 hp, 350 ft-lbs dyno tested
Current: '07 G6 V6...slow

"Wide open 'til you see God....then brake."

Probably fixed it when you put the gas cap back on like already said.

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My Mod List

Im go to try key word try and fix it my self. Has anyone else had this problem adn fixed it them slf befor going to a shop.

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Its Mr hear me befor you see me.
Im KING KONG!!!!!!!


"Why go slow when you can go fast?"

179k miles..........How long have you owned the car?

An o2 code won't come on b/c of a gas cap...I would start by cleaning the MAF and then go straight to replacing the o2 sensor


Do you have any exhaust/vacuum leaks????

I have had the car since May 07. It has about 183 miles on it. the light keeps coming on and off. I dont know if its the o2 sensor or not. I was going to try and clean the MAF first.

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Its Mr hear me befor you see me.
Im KING KONG!!!!!!!


"Why go slow when you can go fast?"

my ses kept going on an off when my maf crapped out on me...but thats code p0104

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6