“DETROIT DIESEL DIAGNOSTIC LINK DDDL 8.20 SP1 2025” has been added to your cart. View cart
Conditions for diagnostic trouble code (DTC):
Open circuit
1) The fan will rotate at full speed at low engine speed
2) At high engine speeds, the fan will either be disengaged or run at low fan speed
Probable cause
1) Wiring harness
2) Connector
3) Solenoid valve, engine fan
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