Saturn

Saturn Repair Problems? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Saturn

2003 saturn l300: 2.3 liter engine..bank one..fuel trim..same code

Customer Question
i have a 2003 saturn...
i have a 2003 saturn L200 with the 2.3 liter engine with code po172B bank one system to rich and fuel trim rich with the same code
Submitted: 8 years ago.Category: Saturn
Show More
Show Less
Ask Your Own Saturn Question
Answered in 25 minutes by:
1/17/2010
Saturn Mechanic: hauto, Saturn Technician replied 8 years ago
hauto
hauto, Saturn Technician
Category: Saturn
Satisfied Customers: 2,728
Experience: worked on saturns for 7 years, in a saturn dealership. saturn factory trained and ceritfied.
Verified

Po172 is not always an indication of a rich condition. the following diagnostic aids will help you get an idea on what it could be. You need a scan tool that can read voltage data from the o2 sensor to determine if their faulty.

DIAGNOSTIC AIDS
DTC P0172 indicates the engine is running rich. The following are possible causes of a rich air/fuel mixture:

  • Fuel pressure high
  • Fuel injector(s) leaking
  • HO2S-1 contaminated
  • Vacuum leak around MAP sensor
  • EVAP purge solenoid stuck open
  • Restricted exhaust or restricted air induction

To verify the system is running rich, use Scan tool to monitor HO2S-1 and HO2S-2. If both sensors are above 600 mV , the system is running rich and the oxygen sensors are probably not at fault.

 

Ask Your Own Saturn Question
Customer reply replied 8 years ago
I have a scan tool so I just need to read live data then when you push on the gas it revs very high and you go nowhere that is why I thought it might be a transmission problem so I had them service the transmission and it was good for a weak or so and the light came back on this is not my car it is a friends and I am trying to fix it for them
Saturn Mechanic: hauto, Saturn Technician replied 8 years ago

No this code has nothing to do with the transmission, usually when you clear it it does not come back right away.

If you read o2 sensor voltage with your scanner and they read above 600mv then the system is running rich and the o2 sensor are not the problem, then you look for a vacuum leak, exhaust leak. if you find none then one of the injectors may be leaking.

If the HO2S-1 AND 2 read below 600mv then they would be the faulty part.

Ask Your Own Saturn Question
Customer reply replied 8 years ago

how can you tell if one of the injectors is leaking I will try that on reading the oxygen sensor voltages though and see what they read first

Saturn Mechanic: hauto, Saturn Technician replied 8 years ago

Well. the easy way but not real efficient is if the O2 sensors are reading within the specs, and there are no vacuum or exhaust leaks. and code po172 is present that's an indication of a rich condition.

there are two ways to test the injectors,

1. to remove them out of the intake and place a dry paper under them for a while

then if part of the paper becomes wet under an injector then that injector is leaking.

2. You can do an injector balance test using a good scan tool.

Ask Your Own Saturn Question
Customer reply replied 8 years ago

bank 1 sensor

rich-lean thres volt 0.555 volts

lean - rich thres volt 0.530 volts

low voltage switch line 0.350 volts

high voltage switch time 0.650 volts

rich lean switch time 0.032 volts

lean rich switch time 0.024

Saturn Mechanic: hauto, Saturn Technician replied 8 years ago

If those are active readings of the senor then the senor is not reading within specs

if there are no exhaust leaks around the senor then replace the senor.

hauto
hauto, Saturn Technician
Category: Saturn
Satisfied Customers: 2,728
Experience: worked on saturns for 7 years, in a saturn dealership. saturn factory trained and ceritfied.
Verified
hauto and 87 other Saturn Specialists are ready to help you
Ask your own question now
Ask hauto Your Own Question
hauto
hauto
hauto, Saturn Technician
Category: Saturn
Satisfied Customers: 2,728
2,728 Satisfied Customers
Experience: worked on saturns for 7 years, in a saturn dealership. saturn factory trained and ceritfied.

hauto is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

George H.

George H.

ASE Certified Technician

819 satisfied customers

ASE Master Tech 15+ Years

Ron Z.

Ron Z.

- Saturn Tech -

636 satisfied customers

18+yrs experience. State Inspector and Saturn Diagnostics

Gm Tech (Cam)

Gm Tech (Cam)

Saturn Mechanic

572 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Chris (aka- Moose)

Chris (aka- Moose)

Saturn Technician

455 satisfied customers

16 years of experience

Don - Mo Lurch

Don - Mo Lurch

Saturn Mechanic

406 satisfied customers

GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

John

John

ASE Certified Technician

375 satisfied customers

Master ASE technician,Master GM technician,40 years experience

cartech

cartech

ASE Certified Technician

305 satisfied customers

25 year master tech and shop owner

< Previous | Next >

Related Saturn Questions
Hard shifting - 2002 saturn sc2 - have checked all
Hard shifting - 2002 saturn sc2 - have checked all electrical connections - filter changed 20k ago, fluid clear/red - … read more
AutoDoc
AutoDoc
Shop Owner
Bachelor's Degree
1 satisfied customers
2005 Saturn Relay V6 charging system failure. New alternator
2005 Saturn Relay V6 charging system failure . New alternator and battery tests good but the charging system failure message is on… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Car won't start. Had a rough idle past 2 days. This morning
Car won't start. Had a rough idle past 2 days. This morning when trying to start the engine turns, but does not try to kick in (like it is trying to start with no spark) Plugged into it and got the fo… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Replaced the ecm and got a new one. now how can i program
replaced the ecm and got a new one . now how can i program it? … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have a Saturn SC2 that have a security system malfunction
I have a Saturn SC2 that have a security system malfunction - starts sometimes & sometimes it don't start. When I just about to start the car, if the "security" light on the panel keeps blinking, the … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Loss of power... wont go ober 20 mph. 2007 outlook. Cleaned
Ir seems to happen when its cold out.. it also disables the remote start...… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2009 saturn aura..turn signal will blink but will not reset
2009 saturn aura..turn signal will blink but will not reset or turn off … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
I have a 2009 Saturn Outlook XE and have been getting codes
I have a 2009 Saturn Outlook XE and have been getting codes P0300, p0302, p0304, p0306 codes, rough idle, replaced spark plugs, coils, 02 sensors, smell gas in the car now, purge valve works, im out o… read more
rpmdiag
rpmdiag
High school
7,284 satisfied customers
2001 saturn l300. Replae c. Replace serpinetine belt. Frayed
2001 saturn l300 JA: Are you fixing your L300 yourself? What have you tried so far? Customer: replae c JA: Anything else you want the mechanic to know before I connect you? Customer: replace serpineti… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I have a 1995 Saturn SL with 118K miles. It jolts when
I have a 1995 Saturn SL with 118K miles. It jolts when changing gears from 1st to 2nd. Is this a timing problem that can be fixed? … read more
Kavey
Kavey
86 satisfied customers
I have a new 2002 Saturn SL2 series and their is 175,000 on
I have a new 2002 Saturn SL2 series and their is 175,000 on it, how long can i get more miles out of it. I heard that one owner had it and was an elderly woman. How much more miles can i get from it a… read more
Mechanic01
Mechanic01
1,716 satisfied customers
Where is the fuel filter located on a 2007 saturn vue
where is the fuel filter located on a 2007 saturn vue hybrid … read more
Gm Tech (Cam)
Gm Tech (Cam)
Saturn Mechanic
Vocational, Technical or Trade Scho
572 satisfied customers
I have a 1995 Saturn SL with 118K miles. It jolts when
I have a 1995 Saturn SL with 118K miles. It jolts when changing gears from 1st to 2nd. Is this a timing problem that can be fixed? … read more
AutoDoc
AutoDoc
Shop Owner
Bachelor's Degree
1 satisfied customers
Connected battery to wrong polarity...now wont turn over.
connected battery to wrong polarity...now wont turn over. All things work except no ignition, no radio. It says service vehicle and something about power steering … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
When raining or roads wet the stabilitrack system shows off
When raining or roads wet the stabilitrack system shows off and is followed by our theft deterrent alarm going off while driving and will not shut off. We've tried using the remote, shutting off the e… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Saturn Vue has keys stuck in the ignition in ACC and on,
Saturn Vue has keys stuck in the ignition in ACC and on, will not start car. Steering wheel is unlocked, new battery. … read more
Gm Tech (Cam)
Gm Tech (Cam)
Saturn Mechanic
Vocational, Technical or Trade Scho
572 satisfied customers
Saturn Ion 2005. Engine light on. Have had it checked and
Saturn Ion 2005. Engine light on. Have had it checked and informed it had something to do with controller. Car will sometimes, (Too often), near total loss of power. If I turn car off and wait a bit i… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I'm having problems with my 2008 Saturn vie no v to fuel
Hi my name is ***** ***** I'm having problems with my 2008 Saturn vie no v to fuel pump … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x