P1249 Need Help!
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P1249 Need Help!
Hi guys I am 
. But I really need some help! I have a 99' F250 w/ the 7.3L Powerstroke. I pulled a p1249 Wastegate Fail Steady State Test code off my truck. I cleared the code and it came back later on in the day. The SES light doesn't come on but when I am going up a hill and I'm almost to the top of it the truck goes to upshift and when the RPMs are on their way down they kind of surge or bounce back up a little and then drop where they are supposed to be. I don't have a tuner or programmer I do have an air intake and 5" exhaust. I've all ready checked to see if the red line (vaccuum?) is connected and it is. So what could it be? Any help would be awesome! Thanks!
. But I really need some help! I have a 99' F250 w/ the 7.3L Powerstroke. I pulled a p1249 Wastegate Fail Steady State Test code off my truck. I cleared the code and it came back later on in the day. The SES light doesn't come on but when I am going up a hill and I'm almost to the top of it the truck goes to upshift and when the RPMs are on their way down they kind of surge or bounce back up a little and then drop where they are supposed to be. I don't have a tuner or programmer I do have an air intake and 5" exhaust. I've all ready checked to see if the red line (vaccuum?) is connected and it is. So what could it be? Any help would be awesome! Thanks!
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Joined: Feb 2009
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Hi guys I am . But I really need some help! I have a 99' F250 w/ the 7.3L Powerstroke. I pulled a p1249 Wastegate Fail Steady State Test code off my truck. I cleared the code and it came back later on in the day. The SES light doesn't come on but when I am going up a hill and I'm almost to the top of it the truck goes to upshift and when the RPMs are on their way down they kind of surge or bounce back up a little and then drop where they are supposed to be. I don't have a tuner or programmer I do have an air intake and 5" exhaust. I've all ready checked to see if the red line (vaccuum?) is connected and it is. So what could it be? Any help would be awesome! Thanks!
. But I really need some help! I have a 99' F250 w/ the 7.3L Powerstroke. I pulled a p1249 Wastegate Fail Steady State Test code off my truck. I cleared the code and it came back later on in the day. The SES light doesn't come on but when I am going up a hill and I'm almost to the top of it the truck goes to upshift and when the RPMs are on their way down they kind of surge or bounce back up a little and then drop where they are supposed to be. I don't have a tuner or programmer I do have an air intake and 5" exhaust. I've all ready checked to see if the red line (vaccuum?) is connected and it is. So what could it be? Any help would be awesome! Thanks!
I am not sure what is that code refers to other than possibly a leak some where on your red or green lines. Check to make sure they are all connected and that the sensor is as well. If you want you can also delete this all together by pulling the lines and plugging where they went on the sensor and intake.
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Joined: Jun 2003
Posts: 8,298
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From: Damon (South East Texas)
This may help to diagnose the code.
KH5 DIAGNOSTIC TROUBLE CODE P1249 — CHECK KOEO FOR P1690
DTC P1249 indicates that the PCM detected the turbo was overboosting.
Possible causes:
short to ground
plugged WGC hose or port
WGC solenoid
WGC actuator
WGC valve
damaged PCM
Perform KOEO On-Demand Self Test.
Is DTC P1690 present?
Yes.............No
GO to KH1 . GO to KH6 .
KH6 CHECK WGC HOSES
Disconnect the RED hose from the WGC actuator.
Install Gauge Bar 014-00760 vacuum pump or equivalent to the hose.
Does the hose hold vacuum?
Yes.............No
GO to KH7 . GO to KH8 .
KH7 CHECK INTAKE PORT
Disconnect the RED hose from the charge air cooler housing.
Does hose still hold vacuum?
Yes.............No
REPLACE WGC hose. RESTORE vehicle. CLEAR DTCs and RETEST. CLEAN out plugged charge air cooler housing hose port. RESTORE vehicle. CLEAR DTCs and RETEST.
KH8 CHECK INTERCOOLER PORT
Disconnect the RED hose from the charge air cooler housing.
Install vacuum gauge to the port.
Does the port hold vacuum?
Yes............................................... ...............................................No
CLEAN out the plugged port. RESTORE vehicle. CLEAR DTCs and RETEST. GO to KH9 .
KH9 CHECK ACTUATOR
Install vacuum gauge on the WGC actuator.
Does actuator hold vacuum?
Yes.............No
CHECK WGC linkage for sticking. REPLACE if necessary. RESTORE vehicle. CLEAR DTCs and RETEST. REPLACE WGC actuator. RESTORE vehicle. CLEAR DTCs and RETEST.
KH5 DIAGNOSTIC TROUBLE CODE P1249 — CHECK KOEO FOR P1690
DTC P1249 indicates that the PCM detected the turbo was overboosting.
Possible causes:
short to ground
plugged WGC hose or port
WGC solenoid
WGC actuator
WGC valve
damaged PCM
Perform KOEO On-Demand Self Test.
Is DTC P1690 present?
Yes.............No
GO to KH1 . GO to KH6 .
KH6 CHECK WGC HOSES
Disconnect the RED hose from the WGC actuator.
Install Gauge Bar 014-00760 vacuum pump or equivalent to the hose.
Does the hose hold vacuum?
Yes.............No
GO to KH7 . GO to KH8 .
KH7 CHECK INTAKE PORT
Disconnect the RED hose from the charge air cooler housing.
Does hose still hold vacuum?
Yes.............No
REPLACE WGC hose. RESTORE vehicle. CLEAR DTCs and RETEST. CLEAN out plugged charge air cooler housing hose port. RESTORE vehicle. CLEAR DTCs and RETEST.
KH8 CHECK INTERCOOLER PORT
Disconnect the RED hose from the charge air cooler housing.
Install vacuum gauge to the port.
Does the port hold vacuum?
Yes............................................... ...............................................No
CLEAN out the plugged port. RESTORE vehicle. CLEAR DTCs and RETEST. GO to KH9 .
KH9 CHECK ACTUATOR
Install vacuum gauge on the WGC actuator.
Does actuator hold vacuum?
Yes.............No
CHECK WGC linkage for sticking. REPLACE if necessary. RESTORE vehicle. CLEAR DTCs and RETEST. REPLACE WGC actuator. RESTORE vehicle. CLEAR DTCs and RETEST.
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