PACCAR MX (2004 Emissions) Fault Code: U1858 A Fault Exists With the DECECU 11 CVN Calculation
PACCAR MX (2004 Emissions) Fault Code: U1858 A Fault Exists With the DECECU 11 CVN Calculation
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.
RESET CONDITION:
The DTC changes to inactive after the diagnostic runs and passes.
POSSIBLE CAUSES:
A malfunction in the system from which the message originates.
