help with p code
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Registered User
Joined: Apr 2005
Posts: 89
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From: Maryland
help with p code
I keep getting p0148 high pressure common rail checksum with the truck on stock programming or with the smarty loaded but it will only set the check engine light when the truck is cold. after the truck warms up to 160 degrees and up it will not set the code.Does anyone have an idea of what could be causing this.Thanks in advance for the help.
Cummins Guru
Joined: Feb 2008
Posts: 4,191
Likes: 65
From: Sunny Southern California Land of Fruits and Nuts
A deviation between the fuel pressure set point and the actual fuel pressure.
Possible Causes
OTHERS DTC'S PRESENT
FUEL LEAKS
FUEL CONTROL ACTUATOR
FUEL PRESSURE SENSOR
CASCADE OVERFLOW VALVE
CHECK VALVE DAMAGED OR BLOCKED
FUEL RETURN LINES OBSTRUCTION, DAMAGE, OR DEBRIS
LIFT PUMP FLOW
AIR IN FUEL SYSTEM
LEAKING FUEL INJECTORS OR HIGH PRESSURE CONNECTORS
PRESSURE LIMITING VALVE
HIGH PRESSURE FUEL PUMP
I would suggest you take your truck to dealer, still under warranty.
Possible Causes
OTHERS DTC'S PRESENT
FUEL LEAKS
FUEL CONTROL ACTUATOR
FUEL PRESSURE SENSOR
CASCADE OVERFLOW VALVE
CHECK VALVE DAMAGED OR BLOCKED
FUEL RETURN LINES OBSTRUCTION, DAMAGE, OR DEBRIS
LIFT PUMP FLOW
AIR IN FUEL SYSTEM
LEAKING FUEL INJECTORS OR HIGH PRESSURE CONNECTORS
PRESSURE LIMITING VALVE
HIGH PRESSURE FUEL PUMP
I would suggest you take your truck to dealer, still under warranty.
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