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Old 03-20-2016, 04:30 PM   #15
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Monaco Owners Club
Join Date: Apr 2010
Location: Saint Leonard,MD
Posts: 731
You may have a wiring issue between the sensor and the ECU. Here is a likely schematic. The two pin intermediate connectors are known to fail. Also check the connector at the ECU for pushed back pins. Be sure you reset the codes correctly. I misread the instructions and was chasing my tail when I had a connector seating problem on the engine speed sensor. Fortunately the Allison was smart enough to get engine speed from the engine off the data bus so I was not stranded.
The oil level sensor is costly to replace. You can use the dipstick as an alternative.
Allison MH4000 info needed

2005 Safari Panther Diamond IV Cat C13
2013 Avalanche Toad
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Old 03-20-2016, 09:03 PM   #16
Join Date: Aug 2014
Posts: 30
Interesting. I will check those relays and see if any are bad. Thanks...

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