SES LIGHT

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I HAVE A 2000 F350SD 7.3 STACKED WITH A BD XPOWER XXX CHIP AND AN EDGE EZ MODULE. WHEN TRUCK SHIFTS INTO OVERDRIVE UNDER HARD ACCLERATION IT SETS THE SES LIGHT FOR ABOUT 3 MINUTES AND THEN GOES OUT. DO YOU THINK THE TRUCK IS DEFUELING THEN? I HAVE READ ABOUT A DFUSER VALVE THAT LETS PRESSURE OF OF THE MAP SENSOR HOSE WHEN BOOST PRESSURE IS TO HIGH. I WAS THINKING THIS COULD ALSO BE MY PROBLEM. HAS ANY ONE EVER EXPERIENCED THIS OR USED ONE OF THESE VALVES OR KNOW OF A DIFFERENT WAY TO KEEP THIS FROM HAPPENING. SOMETIMES IT HAPPENS IF THE TRUCK IS IN 2ND GEAR THEN DOWN SHIFTS TO FIRST THEN BACK TO SECOND GEAR. ANY SUGGESTIONS WOULD BE GREATLY APPRECIATED.TRUCK ALSO HAS BANKS BIG HEAD WASTGATE ACTUATOR, COMPRESSOR WHEEL,BANKS TRANS COMMAND.

[Dave]

It could be an overboost code or could be 1211 code. those are what i would think. but since it is happening when it is shifting the code be tranny related. I would have codes pulled and go from there

[djsdiesel]

Sounds like an over boost code. Yes a "blow off" valve will fix the problem if it is an overboost code. Have the code checked to make sure.

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WHAT IS 1211 CODE

[djsdiesel]

ICP above or below desired pressure, normal with a chip/programmer/module

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TRANSMISSION SHIFTS FINE IF I TURN OVERDRIVE OFF LIGHT DOES NOT COME ON WHEN UNDER FULL THROTTLE

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pcm codes are p1211 p0238 p0478 p0470 po236

[djsdiesel]

p1211- ICP Not Controllable - Pressure Abow/Below Desired- Normal w/ chip
P0470 Exhaust Back Pressure Sensor Circuit Malfunction
P0478 Exhaust Pressure Control Valve High Input - Is the EBPV unplugged??
P0236 Turbo Boost Sensor A Circuit Performance
P0238 Turbo Boost Sensor A Circuit High Input -over boost code, will set light then light will go out after time. get a "map fooler"

click here for CODE DESRIPTIONS

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ebpv is not unplugged

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EBP SENSOR WAS CLOGGED UP