Hello, I started my car the other day and had a dashboard chime, and the coil light started flashing. Switched off and restarted and it disappeared... temporarily!

It came back a couple of days later along with the engine management light and reduced power mode. 

I took it to my local helpful mechanic and he plugged it in and found the following fault codes

P023600 turbocharger boost sensor (A) circ - range performance

P011300 intake air temperature sensor 1 bank 1 - circuit high

P011100 intake air temperature sensor 1 bank 1 - range / performance.

He cleared the air intake alarms, and the engine light disappeared but the P023600 remained. 

I searched under the fault code and boost sensor and most things pointed towards the MAP sensor and its associated wiring.

I managed the remove the MAP sensor (with its fully corroded screws and impossible to access pipe retaining screw on the front of the engine!) And gave it a clean and noticed the small wire sensor part was loose. I cleaned it anyway and refitted everything. The coil light and now the engine light is back on. I am ordering a replacement sensor but what I wanted to find out was whether this is the only turbo boost pressure sensor or do I need to look for another one as well?

 

 

 

Edited 10 June, 20241 yr by FabDervWagon
The car is 2011, 1.6 tdi 105 with 190000 miles on the clock.

That's the only one, it also contains a temperature sensor as well which may explain the other codes.

Update, the brown wire in the connector block that plugs into the MAP sensor was broken. It was very close to the connector itself so it was very tricky to solder. I changed the sensor anyway just in case. Can I buy a replacement connector plug?

Yes, search on eBay and you can buy the correct plug with a tail already fitted.