I installed a Quadzilla 30-60-100 programmer in my 04.5 Cummins. Thing runs great, better mileage etc. I am getting code P0148 now (less than a week) I have had the code cleared 3 times. I comes back instantly when I start the truck. I've cleared the code both with the module installed and without. The engine light went out without the box installed. Once installed, on again. Any thoughts? I have been on the with Quad 10 times already. They can't seem to help other than by sending me a new module.

Here's my issue. I am leaving for a trip on Friday AM. I would like to know if anyone has had a similar experience. Any thoughts on what i should do prior to the trip? Disconnect? Run it? New Module? Any input would be apreciated.

If it matters, the truck has a cold air intake and a Geno's MEK with a cat. Truck has 26K on it and has always run perfect.

 

P0148 High pressure common rail.
Are you rinning the Quad on extreme setting all the time.
If I was you I would be carefull running it on your truck.

 

I have only run it on the top setting for a total of about 2 minutes. I have been running at the 60 HP setting.

When you say be careful, why? What are you referring to? Now i am very concerned.

 

The post above yours actually has bad information in it.

0148 is a fuel delivery error. This is typically caused by a lack of volume to the CP3 pump. This can be caused by a weak lift pump or a dirty fuel filter. These are the 2 most common anyway.

The 0148 has nothing to do with the high pressure side of things, it is strictly on the low pressure side. Your truck could have a weak (not bad) lift pump from the factory and when you demand extra fuel from it, it cannot supply the commanded volume.

If you do a search on 0148 you will find multiple discussions on it from stock trucks when towing, all the way to the highest horsepower trucks, including those that do not alter fuel pressure.

So the first thing you should look at is your fuel filter, have you changed it recently and how many miles are on it?

If that is not the problem you should maybe have your lift pump checked out.


Quad

 

Great info. I have about 7000 miles on the current filter. I will be more than happy to change again.

Just did a search om 0148. thanks. All my questions are answered. Thanks again.

 

I just had 0148 and engine light come on in the middle of the desert.
Towed truck 100 miles.
turned out to be the FILTER.

 

changed my my filter and i am still throwing code P0148. Lift pump seems fine to me. No issue starting after the filter change. I'm a little baffled at this point. Truck runs awesome, but yet a code. I don't get it. Anyone?

 

I know even with a scanner it will take some time to clear the code. I am not sure why it sets differently than others, but if everything is running fine you might give it a few more keystarts.

 

P0148-HIGH PRESSURE COMMON RAIL (HPCR) CHECKSUM

For the Engine circuit diagram (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -SCHEMATIC -ELECTRICAL)

For a complete wiring diagram Refer to Section 8W.

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. (Refer to 9 -ENGINE
DIAGNOSIS AND TESTING)

Diagnostic Test

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

Are any other DTC’s present?

Yes >> Repair other DTC’s first.

Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL).
No >> GoTo2

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.


Do you have any fuel leaks or damaged components?

Yes >> Repair the fuel leak.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

No >> GoTo3


DR/DH ENGINE -ELECTRICAL DIAGNOSTICS -DIESEL 9 -1117


P0148-HIGH PRESSURE COMMON RAIL (HPCR) CHECKSUM (CONTINUED)

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..

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

Yes >> GoTo4
No >> Replace the fuel Injector pump.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

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

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

Yes >> GoTo5
No >> Replace the fuel pressure sensor.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

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

Is the actual fuel rail pressure higher than the fuel rail pressure set point?
Yes >> GoTo6
No >> GoTo9

6. CASCADE OVERFLOW VALVE
Perform the no trouble code test 9*fuel pump return flow test9. (Refer to 9 -ENGINE -DIAGNOSIS AND TESTING)

Did the fuel injection pump pass the test?

Yes >> GoTo7
No >> Replace the Fuel pump.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

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.

Is the check valve damaged or blocked?

Yes >> Repair the cause of the damaged or blocked check valve or replace the valve.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)
No >> GoTo8


9 -1118 ENGINE -ELECTRICAL DIAGNOSTICS -DIESEL DR/DH


P0148-HIGH PRESSURE COMMON RAIL (HPCR) CHECKSUM (CONTINUED)

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

Are the fuel drain lines damaged or blocked?

Yes >> Repair cause of high fuel drain line restriction.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)
No >> GoTo9

9. LIFT PUMP FLOW
Perform the no trouble code 9Lift Pump flow test9. (Refer to 9 -ENGINE -DIAGNOSIS AND TESTING)

Did the Lift pump pass the test?

Yes >> GoTo10
No >> Replace the Lift Pump.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

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

Did the pressure limiting valve pass the test procedure?

Yes >> GoTo11
No >> Replace the Pressure Limiting Valve.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

11. LEAKING FUEL INJECTORS OR HIGH PRESSURE CONNECTORS
Perform the no trouble test 9*Injector return flow test9. (Refer to 9 -ENGINE -DIAGNOSIS AND TESTING)

Are any Injectors leaking or high pressure connectors leaking?

Yes >> Replace or repair the leaking fuel injectors or high pressure connectors.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)
No >> GoTo12

12. HIGH PRESSURE FUEL PUMP
Perform the no trouble code test 9HIGH PRESSURE FUEL PUMP PERFORMANCE TEST9. (Refer to 9 -ENGINE
-DIAGNOSIS AND TESTING)

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

Yes Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure). (Refer to 9 -ENGINE
DIAGNOSIS AND TESTING)

No Replace the High pressure fuel pump.
Perform POWERTRAIN VERIFICATION TEST VER -1 (DIESEL). (Refer to 8 -ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE -DIAGNOSIS AND TESTING)

 

So as one can see there is more then just a clogged filter and or bad lift pump to this code. It could be any number of things. Do not ever assume that it is the most obvious and what everyone else is having a problem with.

Diagnose, find, fix and inform. Good words to go by.

Let us know what it turns out to be. If you have proper fuel pressure and flow into the CP3 then it may just be the Quad.

 

I have been running for 2 days with the bypass plug installed (stock) I still have a code. I guess it's off to the dealer.

Sure am glad i installed a Quad (sarcasm)

 

Well the code is finally gone. Everything seems to be fine, now that it is back to stock.

A replacement Quad arrived today, which i had to pay for until i am credited for the return. I'll throw it in tonight. In the morning I am off to PA pulling my trailer. I'll report what happens.

 

Well the new Quad is installed. Instantly threw a P0148 code.

The second i get home, both are getting boxed up and sent back.