Hi all,

Some of you probably already guessed that I have an SES light on and a DTC code. So the code was P0236 which is Turbocharger Boost Sensor A Circuit Range/Performance. Is this the Boost Sensor that is located on the drivers side valve cover? And, am I correct that I should just replace it?

I want to make sure I change the correct one. Any help/advice would be appreciated.

thank you

Yup, that's the one - has vac lines from vacuum pump and going to the wastegate. Check your vac lines, too. It's a relativley cheap part, but you may be able to salvage it by just spraying some WD-40 into the vac line that's on top of the actual wastegate.

Thanks Dennis. I double checked all the vacuum lines. Since I just recently replaced the vacuum pump, I hoped I might have missed one. Tried the WD-40 too. No luck. Ordered a new sensor from a vendor. Hopefully that will take care of the SES light and give me back that boost.

Ummmm on the valve cover? Thats not the boost SENSOR, its the boost RELAY.

The boost sensor is on top of the intake manifold.

Ummmm on the valve cover? Thats not the boost SENSOR, its the boost RELAY.

The boost sensor is on top of the intake manifold.

Correct, It is on top of the intake plentum and looks like a MAP sensor from a gasoline powered V8. I just trouble shot one that had the retaining clip for the plug missing and the plug was partially out making for a bad connection. Nothing that a tie wrap would not fix! :D

Hmmmm ??? Anybody got a picture of it?

Ok, so I guess I mistook the Boost Sensor with the solenoid or valve. I checked all the connections and they look good, but still the same code and still feel the loss of boost and lots of black smoke under hard acceleration.

Looks like I should be ordering the Sensor. What I now realize is that I should read more before ordering parts. I should have just gone with a mechanical WG instead of replacing my Vacuum Pump a couple of weeks ago. But f I am reading correctly the Boost Sensor tells the ECM how much boost to give so I'd be replacing it anyway.

Thanks guys

Boost sensor senses manifold absolute pressure... AKA MAP. Wastegate solenoid controls vacuum to wastegate on the turbo. Most common cause is wastegate solenoid... not usually the MAP sensor itself. The code is resultant of the ECM not happy with what it sees. It doesn't know the source of the problem, just indicates a place to start lookin'. Check out turbo, wastegate and vacuum pump threads in FAQ sticky for complete details.