Codes 471, 717,711,and 712 - Maintenance & Troubleshooting discussion in Forkliftaction's forums

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Codes 471, 717,711,and 712

Doosan GC25E-5

471,717,711,712......I know what these codes mean and how to too trouble shoot each of them.... my question is does any one know why these codes ALWAYS occur together... I just can't figure it out, the root cause? Thanks for the help.

Posted 23 Feb 2018 11:51
Modified 23 Feb 2018 11:58 by poster
By drew_b
joined 3 Mar'17 - 3 messages
Massachusetts, United States

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Thanks for the feedback. I'll be looking at the alternator on Monday.

Posted 25 Feb 2018 11:25
By drew_b
joined 3 Mar'17 - 3 messages
Massachusetts, United States

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Replacing all vacuum hoses and PCV valve will often reduce these nuisance 700 range codes. Experienced a 471 recently and after checking electrical system, found low alternator output and excessive alternator ripple voltage. Changed alternator and fault did not return.
Maybe just a coincidence, time will tell.
Have also noticed the faults become more frequent with engine age/hours.

Posted 25 Feb 2018 07:05
By tom_p
joined 21 Feb'11 - 198 messages
Alberta, Canada

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