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High Coolant Temperature Shutdown
Engine coolant temperature has exceeded the maximum safe limit and the DSE controller has shut down the engine to prevent thermal damage. This fault will lock out the controller until acknowledged. Do not restart until the cooling system is diagnosed.
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The default DSE high temperature shutdown is typically 102-108 deg C (215-226 deg F), but this is configurable. Warning activates about 10 degrees before shutdown.
Yes, severe overheating can cause head gasket failure, warped cylinder head, piston seizure, and other catastrophic damage. Always investigate and repair cooling issues before restarting.
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