Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy

Getting trouble codes P0449, P0014, P2135, P2138, P0641 also

Customer Question
getting C0040, C0455, C0131, C0244...
getting trouble codes P0449, P0014, P2135, P2138, P0641 also getting C0040, C0455, C0131, C0244, and U1064, U1016. any advise ?
JA: Just to clarify, what's the exact code? And have you tried to reset it?
Customer: Just reset , reading codes with a innova 3020b reader,
JA: What is the model/year of your Chevy?
Customer: 2003 Trailblazer inline 6
JA: Are you fixing your Trailblazer yourself? What have you tried so far?
Customer: trying to, nothing so far just getting info of codes,
JA: Anything else you want the mechanic to know before I connect you?
Customer: car seems to go into a reduced power mode when it rains,
Submitted: 1 year ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 58 minutes by:
9/15/2016
Chevy Mechanic: John, ASE Master Technician replied 1 year ago
John
John, ASE Master Technician
Category: Chevy
Satisfied Customers: 614
Experience: ASE Certified Master Technician, ASE Certified Service Consultant, 22 years professional experience
Verified

Hello, my name is John.

You have a lot of codes here and for multiple systems. My advice would be to narrow down what is you would like to fix. I can help you with that. I can provide you with descriptions for all these codes if you would like. Is your goal to keep your check engine light off? Or to fix the problem of the 'Reduced Power' message when it rains?

Please get back to me on that and in the mean time I will follow this post with a new post of code descriptions.

Thanks.

Ask Your Own Chevy Question
Chevy Mechanic: John, ASE Master Technician replied 1 year ago

P0449 - Evap vent solenoid circuit.

P0014 - Variable camshaft timing.

P2135 - Throttle bodyperformance.

P2138 - Accelerator pedal position sensor.

P0641 - 5 volt refrence circuit.

C0040 - ABS brake circuit.

C0455 - ABS brake circuit.

C0131 - ABS brake circuit.

C0244 - EBCM control valve.

U1064 - Serial Data Class 2 Communication malfunction.

U1016 - Serial Data Class 2 Communication malfunction.

Codes P2135, P2138 and P0641 may all be related and can cause the Reduced Power message.

Code P0014 could also cause a Reduced Power message but for a different reason.

I would recommend focusing on these for starters. They are more likely to resolve whatever issue you intend to fix and fixing these may fix some of the other codes. The 'C' codes are all ABS brake related, we can address those seperately if you would like. That would require a new question post.

Ask Your Own Chevy Question
Chevy Mechanic: John, ASE Master Technician replied 1 year ago

Still need help? I have not heard back from you.

Ask Your Own Chevy Question
Chevy Mechanic: John, ASE Master Technician replied 1 year ago

I saw that you opened another question requesting more information on the codes. That question was locked by Customer Service. If you just respond to this feed then I will see your responses.

Ask Your Own Chevy Question
Chevy Mechanic: John, ASE Master Technician replied 1 year ago

The first thing I would do with those codes to address the Reduced Power message is to clean the throttle body. It can get gummed up and stick causing the P2135, P2138 and P0641.

If that does not fix it then there is a possibility that another component, a common one in the cooling fan, is interfering with the 5 volt ref circuit for the throttle body.

Let me know how things go with the cleaning first and we can dig into the second part of that if needed.

ANother code of concern is the P0014 code. The first thing to look at there is engine oil level and condition. If the oil is dirty or low that can cause the phaser to stick or the tensioner to stick and cause a timing issue. However, I would think this would happen in all conditions, not just rain. If there is any concern oabout the engine oil I would just change it and replace the filter with an AC Delco filter.

Start with that and let me know.

Ask Your Own Chevy Question
Customer reply replied 1 year ago
we clean the throttle body each time this happens, (this has happened off and on for the last two years in wet conditions) it doesn't clear it immediately, I cleared the codes when I first sent this question, as of today, the only code that has come back is P0449, in dry conditions the car is running fine. ( going to work know will look for response)
Chevy Mechanic: John, ASE Master Technician replied 1 year ago

Check for chafed wiring at the following components:
Throttle Position Sensor (TPS) 1, Accelerator Pedal Position (APP) sensor 2, engine cooling fan speed sensor, AC pressure sensor, Fuel Tank Pressure (FTP) Sensor, oil pressure sensor.

If no harness problem found, disconnect each component one at a time and see if the problem is resolved.

Tech Tips:The P0641 code is set when there is a problem with the 5 volt reference circuits for the devices listed above.

Ask Your Own Chevy Question
Chevy Mechanic: John, ASE Master Technician replied 1 year ago

The P0449 code is for Evaporative Emissions. Possibly the EVAP Vent Solenoid has failed or is sticky. Or there is a leak in the system. This should not cause the poor running problem.

Ask Your Own Chevy Question
Ask John Your Own Question
John
John
John, ASE Master Technician
Category: Chevy
Satisfied Customers: 614
614 Satisfied Customers
Experience: ASE Certified Master Technician, ASE Certified Service Consultant, 22 years professional experience

John 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:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

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

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,866 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,918 satisfied customers

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

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
Got an error code p0341 and p0342 relating to the camshaft
got an error code p0341 and p0342 relating to the camshaft position sensor. Been searching online for the right one but the ones that supposedly "fit" look nothing like the one presently on the vehicl… read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
2,002 satisfied customers
O2 sensor and camshaft position sensor failed emissions.
o2 sensor and camshaft position sensor failed emissions … read more
Steve
Steve
Master\u0027s Degree
954 satisfied customers
P0017 Code. Crankshaft and camshaft position sensor for bank
crankshaft and camshaft position sensor for bank 1, and yes I have tried to reset it multiple times … read more
Matt
Matt
Engineer
Bachelor\u0027s Degree
5 satisfied customers
HHR 2009 Errored out with camshaft postion actuator and
HHR 2009 Errored out with camshaft postion actuator and Thottle pedel position switch. … read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,357 satisfied customers
A P1345 Chevrolet - Crankshaft Position-Camshaft Position
i AM GETTING A P1345 Chevrolet - Crankshaft Position-Camshaft Position FAULT on my 1996 Chevrolet Suburban 454 K25. Bad Timing chain? … read more
Ron Z.
Ron Z.
- Chevy Tech -
Vocational, Technical or Trade Scho
2,734 satisfied customers
The code on my car is reading camshaft actuator open in bank
The code on my car is reading camshaft actuator open in bank 1 … read more
Peter Zavarelli
Peter Zavarelli
General auto certifications
269 satisfied customers
1998 chevy siverado 1500 2wd 5.7 vortec code p1345 camshaft
1998 chevy siverado 1500 2wd 5.7 vortec code p1345 camshaft to crankshaft sensor … read more
Ron Z.
Ron Z.
- Chevy Tech -
Vocational, Technical or Trade Scho
2,734 satisfied customers
My 2007 avalanche LS is giving the code for camshaft
Hi there, my 2007 avalanche LS is giving the code for camshaft position sensor and I'm trying to get an idea of the approximate expense to expect … read more
Chris (aka- Moose)
Chris (aka- Moose)
Vocational, Technical or Trade School
47,161 satisfied customers
2009 chevy aveo 1.6L.... Where is camshaft position sensor
2009 chevy aveo 1.6L.... Where is camshaft position sensor bank 1 position A located … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,396 satisfied customers
P0010 code, "Code P0010 Bank 1 Intake camshaft position
"Code P0010 Bank 1 Intake camshaft position actuator electrical circuit had a fault lodged in the computer or was disconnected for a predetermined period of time" … read more
Ricardo Hohl
Ricardo Hohl
Auto Motive Instructor
Automotive tech
4,287 satisfied customers
Can't find the camshaft position sensor location on my 1996
Can't find the camshaft position sensor location on my 1996 GMC Sonoma 2.2 liter. All the diagrams I see show it to the right of the coil pack next to the oil filter. I see the wiring there for it but… read more
rpmdiag
rpmdiag
High school
7,271 satisfied customers
Code says I need to replace camshaft/crankshaft sensor on my
code says I need to replace camshaft/crankshaft sensor on my 1996 454. I know where it is but am tryiny to figure out if I have to remove dist cap … read more
Expert
Expert
15 satisfied customers
Where is the camshaft sensor on a 5.3 vortec, Chevy
Where is the camshaft sensor on a 5.3 vortec JA: Okay, I'll connect you to the mechanic to help find that for your Chevy. Before I do, is there anything else you want him to know? Customer: Chevy aval… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
10,348 satisfied customers
Needs a camshaft actuator and the dealer after charging me
Needs a camshaft actuator and the dealer after charging me $700 now tells me its more … read more
Gunvir Singh
Gunvir Singh
1,817 satisfied customers
2014 chevy captiva code 7E8 camshaft Position Actuator
2014 chevy captiva code 7E8 camshaft Position Actuator circuit open bank 1. Is this like the old Satyrn solenoid issue? … read more
Michael Koster
Michael Koster
13 satisfied customers
Camshaft position sensor was the code so we replaced and it
Camshaft position sensor was the code so we replaced and it just turns over and over without starting … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
18,515 satisfied customers
How should it take to remove and install a STOCK camshaft on
how long should it take to remove and install a STOCK camshaft on a 2008 LS3 CORVETTE ? How many labor hours would be involved? What is a estimated cost for this job at a gm dealer in the midwest? … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,396 satisfied customers
2009 CHEVY COBALT SURGES AT STOP, CHANGED THE CAMSHAFT
2009 CHEVY COBALT SURGES AT STOP, CHANGED THE CAMSHAFT POSSION SENSOR BUT STILL SURGES … read more
Ron
Ron
Automotive Tech
Vocational, Technical or Trade Scho
35,256 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