PACCAR MX (2004 Emissions) Fault Code: U1788 CAN Communication – Message (PROPB_EST) Not Available, Coolant Temperature from Retarder System
PACCAR MX (2004 Emissions) Fault Code: U1788 CAN Communication – Message (PROPB_EST) Not Available, Coolant Temperature from Retarder System
SET CONDITIONS:
This DTC is set when a CAN message is received correctly, but the content (signal value or status) is not available.
DIAGNOSTIC CONDITION:
The diagnostic runs continuously when the ignition is keyed on.
CORRESPONDING OBD READINESS MONITOR:
None
RESET CONDITION:
The DTC changes to inactive after the diagnostic runs and passes.
REPAIR VERIFICATION:
1. Clear all DTCs.
2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.
3. Did the DTC come back?
– No, repair successful
– Yes, repair unsuccessful
POSSIBLE CAUSES:
A malfunction in the system from which the message originates
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