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Reduce power mode. I have a 2010 Chevy 2500 throwing reduce…

Customer Question
Reduce power mode Mechanic's...

Reduce power mode

Mechanic's Assistant: What is the model/year of your Chevy?

I have a 2010 Chevy 2500 throwing reduce power mode. When u plug a pocket scanner to it it says po1o2 which is mass air flow sensor . Replaced it and it continues to throw throw P0102 replaced EGR valve still reduce power and P102 code.

Mechanic's Assistant: Does the engine stall right after starting? And what about hesitation or jerking during acceleration?

No jeking.when reduce mode comes on it stalls then

Mechanic's Assistant: Are you fixing your 2500 yourself? What have you tried so far?

Installed new mass air flow sensor and new EGR valve

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I guess that's all

Submitted: 2 months ago.Category: Chevy
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Answered in 2 minutes by:
5/28/2018
Chevy Mechanic: Eric, Automotive Repair Shop Manager replied 2 months ago
Eric
Eric, Automotive Repair Shop Manager
Category: Chevy
Satisfied Customers: 35,159
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

Ok, what size engine - 6L gas or 6.6L diesel?

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Customer reply replied 2 months ago
duramax
Chevy Mechanic: Eric, Automotive Repair Shop Manager replied 2 months ago

HI,

I will need to opt out as I dont have the flowchart for the duramax. If another expert can help, they will post here to you

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Chevy Mechanic: Dan, Technician replied 2 months ago
Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 26,024
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified

Does the pink wire going to the mass airflow sensor have good power?

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Customer reply replied 2 months ago
I will check
Chevy Mechanic: Dan, Technician replied 2 months ago

Thanks, ***** ***** know.

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Customer reply replied 2 months ago
I've got wi-fi but poor phone service in in a rural area. Let me check wire
Chevy Mechanic: Dan, Technician replied 2 months ago

Website automatically offers phone call, I prefer chat anyway. Let me know, thanks.

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Customer reply replied 2 months ago
I checked pink wire got good voltage
Chevy Mechanic: Dan, Technician replied 2 months ago

Thanks, ***** ***** a few more minutes to pull up information for you.

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Chevy Mechanic: Dan, Technician replied 2 months ago

Next step is to check wiring between mass airflow sensor and ECM, each wire should show under 5 ohms resistance. If any wire has high resistance then follow wire to repair damage or run a new wire. Here is wiring diagram and information from manual to help with testing. My goal is to provide 5 star service so please let me know if you have questions, thanks.

-

https://www.dropbox.com/s/x3lrhn99dl64nuw/m1.pdf?dl=0

-

https://www.dropbox.com/s/tu0a1vix3lflddr/0102.pdf?dl=0

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Chevy Mechanic: Dan, Technician replied 1 month ago

Ever get it figured out? Please do not forget to rate answer, thanks.

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