P0243 Code on start of car
P0243 Code on start of car
I just got my Xede yesterday. Now, there is an issue when starting the car because the service engine light comes on. It does not do it everytime I start the car. I seems to alternate on tripping this error. I read about someone zeroing out the wastegate duty and it should boost 12 psi. To find out if the wastegate wiring is hooked up correctly. It lowers the boost, but I only get 10 psi. I do not know if that makes a difference. I will check my wiring again. I could just have a bad mitsu solenoid. Any help would be greatful.
I just have a k&n filter, hks catback exhaust, and hks turbo timer. I have uploaded the Stage 0 map with 93 octane. Also, I removed the resticter pill. I do not notice any other bad things. I will try to pay more attention to the boost levels to see if it is consistant and steady. I do notice the much smoother powerband
I get a green light on the xede unit.
This is the description of the error:
DTC P0243: Turbocharger Wastegate Solenoid Circuit
I just have a k&n filter, hks catback exhaust, and hks turbo timer. I have uploaded the Stage 0 map with 93 octane. Also, I removed the resticter pill. I do not notice any other bad things. I will try to pay more attention to the boost levels to see if it is consistant and steady. I do notice the much smoother powerband
I get a green light on the xede unit.This is the description of the error:
DTC P0243: Turbocharger Wastegate Solenoid Circuit
https://www.evolutionm.net/forums/sh...ighlight=P0243
I will check these items listed in this forum first.
I will check these items listed in this forum first.
1)wire for WG sol pulled out /damaged/not pluged in
(check it under the airbox (were you took the pill out from))
> The wiring is pluged in and it does not look damaged.
2) Xede not grounded (Ground it to center 10mm nut)
> It is grounded on that bolt
3)Xede boost wire in mirror imaged wrong pin as it should be (check pic below notice opposite side of the white strip third from the right when the yellow side is facing you- also check to see if xede is controlling boost by changing all values to 25 in xmap-constant solenoid click)
> I did not do that but I put all the values to zero and my boost went down.
4)make sure the factory wire that came out of the factory harness is pluged into the receiving wire coming off pcb board
> The wire is pluged in correctly.
5)solenoid tanked- go to
> I will order from mitsu on monday for this part.
Is there any other things I can check?
(check it under the airbox (were you took the pill out from))
> The wiring is pluged in and it does not look damaged.
2) Xede not grounded (Ground it to center 10mm nut)
> It is grounded on that bolt
3)Xede boost wire in mirror imaged wrong pin as it should be (check pic below notice opposite side of the white strip third from the right when the yellow side is facing you- also check to see if xede is controlling boost by changing all values to 25 in xmap-constant solenoid click)
> I did not do that but I put all the values to zero and my boost went down.
4)make sure the factory wire that came out of the factory harness is pluged into the receiving wire coming off pcb board
> The wire is pluged in correctly.
5)solenoid tanked- go to
> I will order from mitsu on monday for this part.
Is there any other things I can check?
The only way this can happen is that the relay on the Vishnu harness board (waste gate solenoid emulator) is not connected to the ECU or the Vishnu harness is bad. Basically recheck the wire you inserted into the ECU connector.
Everything else listed above simply doesn't matter with respect to this error. The solenoid under the hood is no longer controlled by the ECU, hence if there is a problem with it or the Xede's connection to is can't be the cause of the code. (Your ability to control the solenoid with the Xede proves that this part of the install is ok.)
Everything else listed above simply doesn't matter with respect to this error. The solenoid under the hood is no longer controlled by the ECU, hence if there is a problem with it or the Xede's connection to is can't be the cause of the code. (Your ability to control the solenoid with the Xede proves that this part of the install is ok.)
On another note the relay on the older Vishnu harness boards click when the ECU is modulating the waste gate solenoid. While I find this annoying, it does prove that the relay is connected correctly to the ECU.
The relay on newer Vishnu harnesses have a hole drilled in the top and glue forced into the relay to eliminate the noise. I wonder if someone drilled in too far and opened up the coil in the relay?
The relay on newer Vishnu harnesses have a hole drilled in the top and glue forced into the relay to eliminate the noise. I wonder if someone drilled in too far and opened up the coil in the relay?
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Ok, so I checked out the harness and replugged the boost wire into factory harness. The wire was solid in the plug. Still, the code will pop up after a couple of starts of the engine. Any other things to check? I guess I will try go get a hold of vishnu to get a different harness.
Found the problem. The ECU is screwed. It stopped giving a signal to the boost controller. I am trying to figure it out, but I have the best guess it is the installer that did it (me). 
Yep. I took it to a Mitsubishi dealer. He checked there is no current coming out of the ecu for the boost controller circuit. He looked at everything else in the boost control system and it was ok. This makes sense because the xede would boost to the correct psi and when I disconnected the xede from the car, the boost went to 10.5psi which is from reading other posts is the wastegate spring pressure psi. Also, the xede would log 0 output from the ecu for the wastegate duty.
Last edited by nobullevovii; Dec 16, 2004 at 03:18 PM.
