P0627

[TopherSho]

Any wierdness to expect fixing this?

Already know to revert, and swap in the old MAP sensor..

 

[SHOdded]

P0627 - Fuel Pump A Control Circuit/Open

Description:  The fuel pump control module monitors the fuel pump module and secondary circuits for a concern. If the fuel pump control module detects a concern with the fuel pump module or secondary circuits, the fuel pump control module sends an 80% duty cycle signal on the fuel pump monitor (FPM) circuit to report the concern to the PCM. The test fails when the fuel pump control module is still reporting a concern with the fuel pump module or secondary circuits after a calibrated amount of time. 
Possible Causes:  FPPWR circuit open
FPPWR circuit short to ground
FPRTN circuit open
FPPWR circuit short to voltage
FPRTN circuit short to voltage
Damaged fuel pump assembly
Damaged fuel pump control module

Diagnostic Aids:  Check for any harness concerns. The fuel pump control module controls the speed of the fuel pump module by supplying a variable voltage to the fuel pump module on the FPPWR circuit. 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All    GO to Pinpoint Test KC . 

 

[TopherSho]

Yup that's the bugger.. I **could** look at the harness.. but I'd rather have it replaced under my extended warranty..

 

[TopherSho]

Will returning to stock clear the code?? I need the dealer to see it without the  tune...

 

[glock-coma]

Will returning to stock clear the code?? I need the dealer to see it without the  tune...

Yes. It will clear the code.
Probably have to drive it for awhile for it to return.

 

[TopherSho]

Will returning to stock clear the code?? I need the dealer to see it without the  tune...

Yes. It will clear the code.
Probably have to drive it for awhile for it to return.

And reproduced.  Damn shame to.. just pulled my best 0-60 so far .. 4.58 on 92 pump gas. 

edit. dyslexia..

 

[Macgyver]

What boost level are you running with this tune?

 

[TopherSho]

What boost level are you running with this tune?

15 pounds commanded.  about 14 on average actual.  it is popping the code under stock boost.  i think however it is the harness as i have logged the crap out of it and not seen fuel delivery issues.

 

[TopherSho]

issue : pump control module needs replaced.  pending order and repair tomorrow.

 

[SHOdded]

Let's hope that is the fix

 

[TopherSho]

Let's hope that is the fix

Fixed for now!  (no more codes.)

Back on my tune and happy-ish again.