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Hello we get 2 codes on our 2008 freightliner cascadias 249…

Hello we get 2 codes...
Hello we get 2 codes on our 2008 freightliner cascadias 249 254 5 Sid, and 164 254 4 sid they dont regen can you help me with this problem?
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Answered in 29 minutes by:
11/7/2014
Technician: Daniel Wilson,
 replied 8 years ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 15,097
Experience: Owner at DJ Wilson
Verified
Dan :

Hi my name is***** will try to help you with this. 164 254 4 is loss of power to the ECM. This code will set if the ECM loses power before the IGN switch is turned off such as a master switch disconnect or another reason. Bare with me while I look up the other code

Dan :

The 249s254 04 is a sam cab fault for a light or also mirror heat (same code). Check fuse F27 and fuse F7 in the sam cab (behind the glove box) and your interior light bulbs.

Dan :

This would have nothing to do with your regen problem

Dan :

Have you tried a forced/manual regen on these trucks?

Dan :

there should be other code logged for the regen problem. Could you check on those codes and let me know?

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Technician: Daniel Wilson,
 replied 8 years ago

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Customer reply replied 8 years ago

We ran the truck so the temp will get to 185 but it won't regen, only when you accelerate you can hear a noise or a fail when accelerating hard not when you do it softly, no check engine lights turns on or any other light and those are the only codes that we get only.

Technician: Daniel Wilson,
 replied 8 years ago
Thank you for the update Maribel. Have you serviced or changed your DPF recently? Your DPF might be plugged but that would usually trigger a fault code. Have you tried a forced /manual Regen?
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Customer reply replied 8 years ago

No we haven't changed anything. We turned it on to warm it up then after a while it shut down. It gave us another code 128 127 4 Pid

Engine 1 percent exhaust gas recirculate valve 1 position voltage below normal or short what could that be?

Technician: Daniel Wilson,
 replied 8 years ago
thanks for the update. 128 means there is a fault in the engine ECM. The EGR valve fault could be why you're nor regenerating. I would service your DPF and check and clean out your EGR for proper operation.
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Customer reply replied 8 years ago

I gave you the wrong code it is 128 027 4 PID sorry about that?

Technician: Daniel Wilson,
 replied 8 years ago
CODEREASONEFFECT
Fault Code: 2272
PID: P027
SPN: 027
FMI: 4/4
LAMP: Amber
SRT:

Exhaust Gas Recirculation (EGR) valve position circuit - voltage below normal or shorted to low source. Low signal voltage detected at the EGR valve position

sensor circuit.

Possible low power. Power will be removed from the EGR valve motor.

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Customer reply replied 8 years ago

How are the lights inside the cab on a freightliner cascadia turn off where at?

Technician: Daniel Wilson,
 replied 8 years ago
Hi Maribel. How did you make out with the Regeneration problem? Click here for the drivers manual and see PDF page 56 for the interior lighting. If you are satisfied with the information I have provided please be sure to rate or accept as that is how I get credit for my time helping you.
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 15,097
Experience: Owner at DJ Wilson
Verified
Daniel Wilson and 87 other Medium and Heavy Trucks Specialists are ready to help you
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Customer reply replied 8 years ago

We called a mechanic he said it was the computer so we are going to get that replaced.

Technician: Daniel Wilson,
 replied 8 years ago
Good morning Maribel. He thinks the ECMs on both trucks are bad? It could be computer software related but it is very rare for two ECMs to fail. Let me know how that turns out. Is there anything else you would like help with or do you have all the information you need?
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