6771
UnclassifiedFuel
What This Code Means
CAN control non-functional; Current consumption exceeds DSE unit output specification; Fuel Relay Output failure; CANbus communication errors
Possible Causes
- •Deutz ECU parameter 4400 not enabled
- •Direct connection to high-draw component (Fuel Relay or Start Relay)
- •Incorrect module configuration
- •Incorrect cable impedance
- •Unscreened cable
- •Incorrect screen grounding
Suggested Actions
- 1Using the Deutz service tool software, change parameter 4400 on Page 6 to ‘1’
- 2Install an external slave relay
- 3Check current consumption against DSE unit output specification
- 4Configure the Fuel Relay Output to CAN ECU Power
- 5Use only screened 120 Ω impedance cable approved for CANbus applications
- 6Connect CANbus cable screen at one end only
Related Deep Sea Electronics Fault Codes
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Get a diagnosis walkthrough for 6771 on your specific Deep Sea Electronics unit — cited to the OEM manual, not a forum guess.
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