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  #1  
Old 06-28-2010
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Default DETROIT DIESEL Electronic Controls DDEC-II Diagnostic Codes

Thanks to Mike Sprinkel WestySKPs you can now find the DETROIT DIESEL Electronic Controls DDEC-II Diagnostic Codes at;

Wanderlodge Owners Group > Links, Files, Old Yahoo Forum Database and Downloads > Manuals and Files Stored in This Forums Software DATABASE > Index of Downloaded Manuals and Files in Forums Software Database >FILES & DIRECTORIES > DDEC-2Codes.bmp 1.1M

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Old 12-18-2011
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Recently I finally figured out how to display the codes using the check engine switch. If I'm reading correctly it is flashing 1643. Is this 16 and 43? According to this chart 16 is "coolant sensor hi volt," and 43 is "low coolant level."

The "hi volt" is something I don't understand, yet I know my coolant level isn't low. The temps are running under 200 degrees, usually around 180 even on a hot day.

I'd be interested if someone could offer a diagnostic for this, and I'd also like to know the function of the check transmission switch.
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Old 12-18-2011
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The transmission also has a fault list....I will scan it next time I'm in the BB ...probably Monday PM if you need it.

.
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Old 12-18-2011
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Quote:
Originally Posted by Bob Johannesen View Post
The transmission also has a fault list....I will scan it next time I'm in the BB ...probably Monday PM if you need it.

.
I'd appreciate that, Bob. Thanks.
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Donn Barnes
Alvarado (Fort Worth), TX

1990 WB-40 Royal Conversion
GS 810327023 -- FMCA 421581 -- SKP 109591

"We are confronted with insurmountable opportunities... "
Walt Kelly, 08/25/1913 - 10/18/1973
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  #5  
Old 12-19-2011
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OK here is a copy of the two "cheat sheets" that were cards that I laminated together. The yellow is the transmission Computer fault list and the white one is the engine DDEC II fault list. I copied both sides.





You can now laminate them back to back and have both sides of both cards. I taped them inside the cabinet door over the driver's head since I would be there reading the codes.

Drive Safe!

.
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Bob & Judy Johannesen
1991 WLWB "Seldom Blue"
Argyle, Texas
940-300-5257

FMCA #72567, WL #1986, Vintage Birds # 345,
IBA #11205
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  #6  
Old 12-19-2011
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Quote:
Originally Posted by Donn B View Post
Recently I finally figured out how to display the codes using the check engine switch. If I'm reading correctly it is flashing 1643. Is this 16 and 43? According to this chart 16 is "coolant sensor hi volt," and 43 is "low coolant level."

The "hi volt" is something I don't understand, yet I know my coolant level isn't low. The temps are running under 200 degrees, usually around 180 even on a hot day.

I'd be interested if someone could offer a diagnostic for this, and I'd also like to know the function of the check transmission switch.
My check trans switch does nothing.

My guess for the 16 and 43 is that you've lost the ground side of the sensor. So, it reads high, leading to the assumption that the coolant is low.

Keep in mind that these codes are retained until someone with the proper tool clears them, so they could be from a past event when the coolant was actually low.
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Old 03-01-2012
Bob Johannesen Bob Johannesen is offline
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That is exactly what mine is showing today....after being on the ramps for a few days...... I got it down level and now the same codes are flashing and it won't start. I called Stewart & Stevenson customer service and he suggested I try shorting the probe out and the DDEC II should cut that sensor out and ignore the short and it should reset to start. NOT!

It actually sounds like it is not getting fuel.


Very frustrating. I did change the oil and filter, replace the oil pressure guage sender (which is now "pegged out" showing 80 lbs. at a quiet stand still!!)

So I guess I will be home this weekend trying to figure out what else to do instead of going to the Lone Star Bird Rally...I knew I should never have stopped drinking!!


.
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Bob & Judy Johannesen
1991 WLWB "Seldom Blue"
Argyle, Texas
940-300-5257

FMCA #72567, WL #1986, Vintage Birds # 345,
IBA #11205
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  #8  
Old 07-08-2012
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Does anyone know of someone in the North Texas area with a DDEC II diagnostic reader? Thanks to the forum I know how to check the codes and Bob's card tells me what the codes mean, but now that I've fixed the problems I'd like to clear the codes.
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Donn Barnes
Alvarado (Fort Worth), TX

1990 WB-40 Royal Conversion
GS 810327023 -- FMCA 421581 -- SKP 109591

"We are confronted with insurmountable opportunities... "
Walt Kelly, 08/25/1913 - 10/18/1973
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