3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

multiple codes

Old Oct 20, 2011 | 09:42 PM
  #1  
astevenson's Avatar
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From: blue springs MO
multiple codes

I've been getting the codes 2579 or 2580 for the turbo speed sensor off and on every since I bought my truck 4 mounths ago. I havent had a chance to replace the sensor yet but the truck is only used on the weekends to tow the race car so it hasent had alot of miles on it. The other day the check engine light came on again. When I got home I checked the codes and it came up with 5 codes.

2262 turbocharger boost pressure not detected-mechanical
0087 fuel rail pressure to low
1011 fuel pump delivery pressure too low
2580 turbo speed sensor circuit low
2579 turbo speed sensor circuit performance

Is there anything that would cause all of these codes to come up at the same time? Or do I have several different issues? Is the low fuel pressure due to the pump in the tank or is it the injection pump? The truck has been running fine with no problems other that the codes no misses no smoke and plenty of power. truck is bone stock and to my knowledge has never had any modes done to it.
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Old Oct 20, 2011 | 11:07 PM
  #2  
BigIron70's Avatar
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From: Sunny Southern California Land of Fruits and Nuts
Sounds like you have a few issues turbo may need to be cleaned or replaced. PCM needs to be updated, turbo speed sensor replaced if turbo checks ok and just needed a cleaning. 0087 can be caused by quite few things such as the following.
FUEL FILTER
EXTERNAL FUEL LEAKS
LOW FUEL PUMP MODULE FLOW DUE TO FAULTY IN TANK LIFT PUMP MODULE OR WIRING
HIGH PRESSURE PUMP
INJECTOR LEAKAGE
FUEL PRESSURE LIMITING VALVE
These will need further diag to confirm part failure. I would replace fuel filter if it hasn't been replaced in 15k miles.
Possible causes for a 1011 are
FUEL LEAKS
FUEL FILTER
LIFT PUMP FLOW
HIGH PRESSURE FUEL PUMP
LEAKING FUEL INJECTORS OR HIGH PRESSURE CONNECTORS
PRESSURE LIMITING VALVE
FUEL CONTROL ACTUATOR
CHECK VALVE DAMAGED OR BLOCKED
FUEL PRESSURE SENSOR
FUEL RETURN LINES OBSTRUCTION, DAMAGE, OR DEBRIS
CASCADE OVERFLOW VALVE
AIR IN FUEL SYSTEM

So a complete diag test of the fuel system will need to be done also.
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