error code 751 flashing - Technical Troubleshooting discussion in Forkliftaction's forums

Doosan (& Daewoo) PRO 5:
error code 751 flashing

Flashing code 751.I need help with this code and what to check for?

Posted 10 Sep 2015 02:01
Modified 10 Sep 2015 02:02 by poster
Discussion started by greasespoon
somerset, United Kingdom

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So no air through either side right?

Posted 23 Feb 2022 09:46
Reply by Jose_Felix
California, United States

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Check for Vac. leaks, and the Fuel Trim Valves. You can Ohm them out should be 26+/- 2 ohms. If you can blow air through them then they are faulty and stuck open.

The fault code reads as Pre-Catalyst 02 sensor indicates extended lean operation. This is odd as the system is designed to run rich when something goes wrong with the fuel system.

Posted 5 Oct 2017 23:15
Reply by sirthor1881
Georgia, United States

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