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I have a Mack CHU613 with a Mack MP8 engine. I have the

following attached codes. I keep...
I have a Mack CHU613 with a Mack MP8 engine. I have the following attached codes. I keep having to regen everyday at least 3 to five times a day. Can you put in order what codes to troubleshoot first and the troubleshooting tree for each please?
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Answered in 4 hours by:
7/3/2021
Technician: Mike Mcmillan, Shop Foreman/Triage Tech replied 1 year ago
Mike Mcmillan
Mike Mcmillan, Shop Foreman/Triage Tech
Category: Medium and Heavy Trucks
Satisfied Customers: 6,450
Experience: Volvo/Mack Master Tech, Certified with Cummins, Eaton, GM, Hino, Detroit Diesel
Verified

Hi I’m Mike and I am a technician here on Just Answer and I hope you are having a great day, and will do my very best to get you back up and running as soon as possible and will answer any questions you may have . You will be prompted to accept a phone service, I personally do not offer this but you are welcome to take this and I or another technician will call . I am sorry that you are having issues and I know that this can be frustrating. Please understand that I am here to help. I have scattered availability during the day in the week but I am available most weekends. I am a user of this site just like you and use it on my spare time away from work and family to help people like yourself out. Please allow me a moment to look over your question and I will be right back with you. Thanks,

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Technician: Mike Mcmillan, Shop Foreman/Triage Tech replied 1 year ago

On your question, With the piston cooling jet pressure faults, this will be a defective sensor, This is a known issue, the sensor has been updated. The def tank temp faults will need the software updated in the mid 128 and 233. Then run the def tank heating valve test and see if the tank temp raises. The 111 fault code is for coolant level open circuit, Check the pin connections at the sensor, if those are fine then replace a sensor. The AHI fault code will need the following, Check the air pressure to the module, It needs to be between 34-40 psi, If that is fine, check the 7th injector for being plugged up. If that is fine, then replace the AHI module. The other faults will be addressed with software updates and a few are ghost faults. I hope this helps with your issue. Thank you

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Customer reply replied 1 year ago
Where's the sensor located For the pitching cooling jet pressure?piston cooling. Sorry about the auto correct
Technician: Mike Mcmillan, Shop Foreman/Triage Tech replied 1 year ago

That is the sensor right on top of the oil filter housing

Mike Mcmillan
Mike Mcmillan, Shop Foreman/Triage Tech
Category: Medium and Heavy Trucks
Satisfied Customers: 6,450
Experience: Volvo/Mack Master Tech, Certified with Cummins, Eaton, GM, Hino, Detroit Diesel
Verified
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