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16 freightliner cascadia DD15, Check engine light is on, I…

Customer Question
16 freightliner cascadia DD15, Check engine...
16 freightliner cascadia DD15,
Check engine light is on,
I have 3 fault codes:Eng1 spn 3216 fail 18
EEC61 spn 3216 fail 3
EEC61 spn 3223 fail 7
Submitted: 2 years ago.Category: Medium and Heavy Trucks
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Answered in 3 hours by:
6/17/2020
Technician: Daniel Wilson,
 replied 2 years ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 14,846
Experience: Owner at DJ Wilson
Verified

Hi, It is Dan. I will be glad to help. We can follow up as needed on here, Give me some time to review your information and follow up with my responses. Professionals are not employees of the site but users of the site and help on here as time allows in between jobs, family,etc. Response time can vary depending on my work load each day but I will always respond back on my next available login. Feel free to respond back at anytime if for any reason we seem to get separated,for status, etc.

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Technician: Daniel Wilson,
 replied 2 years ago

Sorry to hear you are having troubles with your Freightliner truck. These fault codes are all Nox sensor related codes. Thoroughly inspect your wiring harness and connector pins going to your inlet Nox sensor. If the wiring checks out okay replace the sensor and then see if the fault code still exists. It is a pleasure to help anyway I can. .

3216 18 NOx inlet sensor plausibility error low

3216 3 SCR Inlet NOX Sensor Circuit Failed High

3223 7 NOX RAW Sensor not ready after dewpoint enable check.

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Customer reply replied 2 years ago
Thank you for your adviceall that codes are only for inlet nox sensor am I right?if I change it problem will be solved
Technician: Daniel Wilson,
 replied 2 years ago

All of the codes are related to the sensor. That is correct. There is either a problem with the wiring harness between the ECM and sensor or a problem with the sensor itself.

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Customer reply replied 2 years ago
Can you tell me what is it ECM?
Technician: Daniel Wilson,
 replied 2 years ago
Electronic control module or engine control module. It is the programmed module for your engine functions that your engine wiring harness connects to.it is usually located on the left hand side of the engine block.
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Customer reply replied 2 years ago
I have replaced the sensor and codes has gone, but now I have a new code EEC 61 spn 4374 fail 0What can be a reason? Did I damage something while replacing the sensor or something else?
Customer reply replied 2 years ago
the coolant temperature is higher than before
Technician: Daniel Wilson,
 replied 2 years ago
I'm glad to hear you were able to resolve the original problem. Normally you would open up a new request for your new problem. click on this link below for the troubleshooting procedure and potential causes of your new problem which is high def pressure related. http://dd15troubleshooting.com/43740-under-pressurized-diesel-exhaust-fluid-system/
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Category: Medium and Heavy Trucks
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