my check engine light came on lastnight on the way home it came on right after i fill it up with fuel this was the first time i fill it up with the truck running why i done this i dont know. but about 2 miles after fill it up the engine light came on. i check to see what the code was it came up (high pressure common rail) what can this be?

 

that is only part of the code, should have something else like a pressure problem or sensor problem within the code, shouldnt have had anything to do with the fill up, try to clear and see if it returns, sometimes you can get a code for seemingly no reason at all, clear it, and never see it again, hopefully that will take care of you, but if not loet us know, and welcome to DF!

 

I fill my truck up all the time while it's running. Never had a code pop up for that.

 

The code comes up p1048 i have delete the code twice now and it keeps coming back. the truck runs good intill its gets over 2000 rpms then it goes to he--! It has no power at all over 2000 rpm.

 

P1048 M/T Vehicle Configuration that's what that code means damn obd code book sucks that's all the info i can help you with

 

something to do with a manual trans set up, not real sure where to go from here...

 

got it... not 1048 but 0148 correct?




P0148-HIGH PRESSURE COMMON RAIL (HPCR) CHECKSUM

WHEN MONITORED
While the engine is running.

SET CONDITION
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
Intermittent condition
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test



1. OTHERS DTC'S PRESENT
With the scan tool, read DTCs.

Q: Are any other DTC's present?

YES: Repair other DTC's first. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1
NO: Go To 2



2. FUEL LEAKS
Ensure that the fuel level is above 15% using the scan tool.
Visually inspect the low and high pressure side of the fuel system for fuel leaks or damaged components.

Q: Do you have any fuel leaks or damaged components?

YES: Repair the fuel leak. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1
NO: Go To 3



3. FUEL CONTROL ACTUATOR
Check for a mechanically stuck Fuel Control Actuator (FCA). Using the scan tool, actuate the fuel control actuator.

NOTE: The fuel control actuator will only click when cycled off.

Q: Do you hear a click from the actuator when you cycle the actuator off with the scan tool?

YES: Go To 4
NO: Replace the fuel Injector pump. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1



4. FUEL PRESSURE SENSOR
Using the scan tool, monitor the fuel pressure reading from the fuel rail pressure sensor at idle and at 2000 RPM .

Q: Is the fuel rail pressure reading higher at 2000 RPM than at idle?

YES: Go To 5
NO: Replace the fuel pressure sensor. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1



5. HIGH FUEL PRESSURE
Using the scan tool compare the fuel rail pressure set point with the actual fuel rail pressure.

Q: Is the actual fuel rail pressure higher than the fuel rail pressure set point?

YES: Go To 6
NO: Go To 9



6. CASCADE OVERFLOW VALVE
Perform the no trouble code test 9*fuel pump return flow test 9.

Q: Did the fuel injection pump pass the test?

YES: Go To 7
NO: Replace the Fuel pump. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1



7. CHECK VALVE DAMAGED OR BLOCKED
Check the fuel drain line check valve in the rear of the cylinder head for signs of damage, blockage, or debris.

Q: Is the check valve damaged or blocked?

YES: Repair the cause of the damaged or blocked check valve or replace the valve. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1
NO: Go To 8



8. FUEL RETURN LINE OBSTRUCTION, DAMAGED OR DEBRIS
Check the fuel return lines for signs of obstruction, damage, or debris.

Q: Are the fuel drain lines damaged or blocked?

YES: Repair cause of high fuel drain line restriction. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1
NO: Go To 9



9. LIFT PUMP FLOW
Perform the no trouble code 9Lift Pump flow test 9.

Q: Did the Lift pump pass the test?

YES: Go To 10
NO: Replace the Lift Pump. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1



10. PRESSURE LIMITING VALVE
Perform the no trouble code test 9 Pressure Limiting Valve on the Fuel Rail for internal leaks9.

Q: Did the pressure limiting valve pass the test procedure?

YES: Go To 11
NO: Replace the Pressure Limiting Valve. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1



11. LEAKING FUEL INJECTORS OR HIGH PRESSURE CONNECTORS
Perform the no trouble test 9*Injector return flow test 9.

Q: Are any Injectors leaking or high pressure connectors leaking?

YES: Replace or repair the leaking fuel injectors or high pressure connectors. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). See: Verification Tests\Powertrain Verification Test Ver - 1
NO: Go To 12



12. HIGH PRESSURE FUEL PUMP
Perform the no trouble code test 9HIGH PRESSURE FUEL PUMP PERFORMANCE TEST 9.

Q: Did the fuel pump pass the high pressure fuel pump performance test?

YES: Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
NO: Replace the High pressure fuel pump. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL
__________________

 

the basics i could find may be, pluged fuel filter, bad lift pump, bad rail pressure sensor, bad pressure control valve for the cp3, or a bad cp3... (cp3 = injection pump)

 

code was reversed opps p0148 is the correct code. My truck did that the fuel filter was clogged. It didn't set a code though.
What year of truck and engine size and model of truck? We know its a common rail but no other info.

 

The truck is a 06 mega cab 5.9 diesel. The code has been erased twice now and it keeps coming back.when i erase the code the truck runs perfect intill it hits 2200 rpms. If it stays over 2200 for a minute or two it throws the code up again.this sucks i need this truck this weekend.