Pontiac

Pontiac problems? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

Service engine soon light. coes are p1189 and po442. The…

Customer Question
Service engine soon light...

Service engine soon light. coes are p1189 and po442

Mechanic's Assistant: Do you have the trouble code? Do you have a code reader or scan tool?

Yes the codes are above

Mechanic's Assistant: Great. If you share the code with me, I'll pass it along to the Pontiac Mechanic. He'll be able to diagnose your issue much faster with a code. What is the model/year of your Pontiac?

2003 pontiac montana p1189 and po442

Mechanic's Assistant: Are you fixing your Montana yourself? What have you tried so far?

Nothing becuase it just happened and I dont know if IM fixing it myself becauise dont know what the codes realate to

Submitted: 1 year ago.Category: Pontiac
Show More
Show Less
Ask Your Own Pontiac Question
Answered in 8 minutes by:
12/31/2016
Pontiac Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Pontiac
Satisfied Customers: 5,632
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Ask Your Own Pontiac Question
Pontiac Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

Hey how are you

SYSTEM DESCRIPTION This DTC tests the evaporative emission (EVAP) system for a small leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the vacuum decay rate. At an appropriate time, the control module turns the EVAP canister purge valve ON and the EVAP vent valve ON. This allows the engine to draw a vacuum on the EVAP system. At a calibrated time, or vacuum level, the control module turns the EVAP canister purge valve OFF, sealing the system, and monitors the FTP sensor input in order to determine the EVAP system vacuum decay. If the control module detects a leak larger than a calibrated amount, this DTC sets.

Zoom and Print Options

The table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent valves.

CONDITIONS FOR RUNNING THE DTC
- DTCs P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0121, P0122, P0123, P0125, P0440, P0443, P0449, P0452, P0453, P1106, P1107, P1112, P1114, P1115, P1121, P1122 are not set.
- The ignition voltage is between 10-18 volts.
- The barometric pressure (BARO) is more than 75 kPa.
- The fuel level is between 15-80 percent.
- The engine coolant temperature (ECT) is between 4-30°C (39-86°F).
- The intake air temperature (IAT) is between 4-30°C (39-86°F).
- The start up ECT and IAT are within 9°C (16°F) of each other.
- The vehicle speed sensor (VSS) is less than 121 km/h (75 mph).

CONDITIONS FOR SETTING THE DTC
The EVAP system can achieve vacuum, but a vacuum decay is detected during the diagnostic test.

ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.

DIAGNOSTIC AIDS
- To help locate intermittent leaks, use the J 41413-200 Evaporative Emissions System Tester (EEST) to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with the J 41413-SPT High Intensity White Light.
- To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT.
- For intermittent conditions refer to Intermittent Conditions. See: Computers and Control Systems > Initial Inspection and Diagnostic Overview > Intermittent Conditions

TEST DESCRIPTION

Zoom and Print Options

Steps 1 - 3

Zoom and Print Options

Step 4

Zoom and Print Options

Steps 5 - 7

The numbers below refer to the step numbers on the diagnostic table.
2. This step verifies that a failure condition is present.
4. Introducing smoke in 15 second intervals may allow smaller leak areas to be more noticeable. When the system is less pressurized, the smoke will sometimes escape in a more condensed manner.
6. This step verifies that repairs are complete and that no other condition is present.

Ask Your Own Pontiac Question
Pontiac Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

2003 Pontiac Truck Montana V6-3.4L VIN E

Save Article

DTC P1189 CIRCUIT DESCRIPTION The engine oil pressure switch is a normally closed switch that opens with the proper oil pressure. With the ignition switch turned ON and the engine not running, the PCM should detect a low signal voltage input. With the engine running, the pressure switch opens, and the PCM should detect a high signal voltage input. The PCM tests the state of the engine oil pressure circuit with the ignition switch turned ON, and the engine turned OFF. If the PCM detects a high voltage input on the engine oil pressure signal circuit, DTC P1189 will set. CONDITIONS FOR RUNNING THE DTC - The ignition is ON, with the engine OFF. - DTC codes P0117, P0118, P1111, and P1114 are not set. CONDITIONS FOR SETTING THE DTC - The PCM detects that the engine oil pressure switch signal circuit is high. - The above condition is present for greater than 10 seconds. ACTION TAKEN WHEN THE DTC SETS - The PCM will not illuminate the malfunction indicator lamp (MIL). - The PCM will store conditions which were present when the DTC set as Fail Records data only. The information will not be stored as Freeze Frame data. CONDITIONS FOR CLEARING THE MIL/DTC - A History DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction. - The PCM receives the clear code command from the scan tool. TEST

Zoom and Print Options

Steps 1 - 4

Zoom and Print Options

Steps 5 - 9

Ask Your Own Pontiac Question
Pontiac Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

Please let me know if you need anything else on it, just reply back and we will continue

If you are good, Please Kindly Rate Me.

A 5 Star Rating is much Appreciated

If you feel I have not been helpful Please DO NOT RATE ME BAD OR POOR (1 or 2 stars) ,You can always ask me again or I can opt out of your question & open it for another expert ,that will provide you with more or better assistance on this issue

Please keep in mind that when you rate me , it does not end our conversation.

you can always come back to this conversation and ask me any follow up question you may have on this issue

(you can copy this link page & paste it in your browser when ready and it will open up our conversation again)

Thank You
Chad Farhat
ASE Certified Technician

Ask Your Own Pontiac Question
Customer reply replied 1 year ago
I dont even know what that all means. in laymans terms please?
Customer reply replied 1 year ago
I cant do that sorry. thanks for your time
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a pontiac mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Pontiac
Satisfied Customers: 5,632
5,632 Satisfied Customers
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles

Chad Farhat 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:

GM Tech (Cam)

GM Tech (Cam)

Pontiac Technician

2,396 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Dave Nova

Dave Nova

Pontiac Technician

2,014 satisfied customers

ASE Master Certification. GM World Class Certification

Gary

Gary

Pontiac Technician

1,459 satisfied customers

15 years GM master tech/15 years ASE master

Ron Z.

Ron Z.

- Pontiac Tech -

777 satisfied customers

18+yrs experience. State Inspector and Pontiac Diagnostics

Don - Mo Lurch

Don - Mo Lurch

Pontiac Mechanic

557 satisfied customers

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

John

John

GM FACTORY CERTIFIED TECHNICIAN

514 satisfied customers

ASE A1-A8 w/L1 GM master technician.Factory certified/40 years experience

car tech

car tech

ASE Certified Technician

446 satisfied customers

25 years master tech and shop owner

< Previous | Next >

Related Pontiac Questions
I'm trying to find the expansion valve on my 2001 Pontiac
I'm trying to find the expansion valve on my 2001 Pontiac Montana van … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I'm trying to find the expansion valve on my 2001 Pontiac
I'm trying to find the expansion valve on my 2001 Pontiac Montana van … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
P1811, P1189 and P0446 service engine codes. Car has lost
P1811, P1189 and P0446 service engine codes. Car has lost acceleration specifically from a stop. Seems to not want to go over 40mph. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I replaced the cooling fan motor relay. But the check engine
I replaced the cooling fan motor relay . But the check engine light is still on … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,639 satisfied customers
My. The light check engine flash and the motor don't turn
The light check engine flash and the motor don't turn good. 2000 Pontiac Montana V6 … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
My van just turns off, 2000 pontiac montana, I took it to a
My van just turns off JA: What is the model/year of your Pontiac? Customer: 2000 pontiac montana JA: Are you fixing your Montana yourself? What have you tried so far? Customer: I took it to a shop JA:… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,639 satisfied customers
My wife was recently driving it to the store and it just
My wife was recently driving it to the store and it just shut down. We hooked it up to a tester and it says cylinder fuel injector 1-6. I have no idea where to begin looking for them. … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
841 satisfied customers
I just sent it, 2003 pontiac montana, I have a 2003 pontiac
I have a 2003 pontiac montana awd versatrak 3400 sfi the srvice light blinks the van shuts off it has a p0300 code random misfire new pligs and wires high rev … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,639 satisfied customers
2003 Pontiac Montana, transmission gear shift bushing off or
2003 Pontiac Montana, transmission gear shift bushing off or probably worn out. … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
Engine service light keeps coming on : can you give me a
Engine service light keeps coming on JA: Do you have the trouble code? Do you have a code reader or scan tool? Customer: can you give me a minute I will get it JA: The more information we have the bet… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Traction control on a 2001 Pontiac Montana not wworking,
Traction control on a 2001 Pontiac Montana not wworking … read more
Don - Mo Lurch
Don - Mo Lurch
Pontiac Mechanic
Vocational, Technical or Trade Scho
557 satisfied customers
Pontiac Montana: I have a 2003 pontiac Montana... biggest mistake
I have a 2003 pontiac Montana... biggest mistake I ever made was buying it. The problem with it is that when it gets to idling, it stalls. So long as I am putting pressure on the gas pedal, it wont st… read more
Gary
Gary
Pontiac Technician
Vocational, Technical or Trade Scho
1,459 satisfied customers
Pontiac Grand Am LE: The Trac light and control comes on intermittently
The Trac light and control comes on intermittently making the car jerk. What is causing it and how can I fix it? It is a 2001 Pontiac Grand Am.… read more
Donald Knight
Donald Knight
Shop Manager/Technican
Associate Degree
527 satisfied customers
2000 pontiac montana: mini van..the air filter..housing..air intake
I have a 2000 pontiac montana mini van. Im trying to replace the air filter, but the housing lid is on the side attatched to the motor's air intake.... the lid is very difficult to pull out far enough… read more
Jettadan1
Jettadan1
Lead mech
Some college
1,421 satisfied customers
2003 Pontiac Montana: plate..service engine soon..runs fine..readings
I just aquired a 2003 Pontiac Montana. I need to pass the pollution test in order to plate it. The" service engine soon" light is on although the vehicle runs fine. I had my friendly mechanic scan it … read more
Dave Nova
Dave Nova
Pontiac Technician
Associate Degree
2,014 satisfied customers
2003 pontiac: linkage..metal..shifter..clip..i get it tack welded? it
how can i reconnect the linkage to a 2003 pontiac montana..i have tried jb weld..it wont hold..i need a permanent fix... the boot goes on to the little metal ball on the transmission shifter has come … read more
Dave Nova
Dave Nova
Pontiac Technician
Associate Degree
2,014 satisfied customers
99 pontiac grand am: autozone..it has the service engine soon light on
i went to autozone and had it checked for trouble code becuase it has the service engine soon light on and they said its the iat sensor....i was just wondering if i replace that will the light go away… read more
phil
phil
High School or GED
235 satisfied customers
99 pontiac grand am: autozone..trouble code..service engine soon
i went to autozone and had it checked for trouble code becuase it has the service engine soon light on and they said its the iat sensor....i was just wondering if i replace that will the light go away… read more
marcpod
marcpod
Own collision repair service
Vocational, Technical or Trade Scho
1,185 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