...OBD error for Saab 2.2 TiD....

galwaytt

So, I just got around to putting Torque Pro on my phone, and buying the ELM Bluetooth adaptor.

The S.O's Saab has a managment light coming on fairly often now, so I wanted to see what it was.......see attachment.

So, how do I interpret this - does this mean the MAP is fubar'd ?

Row

I find this site good for fault code descriptions...:)
http://www.permoveo.ltd.uk/tabid/122/OBD-Error-Code/P0106/Diagnostics/Saab/Default.aspx

The Absolute manifold Pressure should read about 1000mbar (atmospheric pressure) with ignition on and much the same with engine running at idle...as you rev the engine this should rise to around 1200mbar at standstill.

When the engine is under load (driving) the the map sensor measures turbo boost....not sure if you can view live data but if you can select "actual turbo pressure" and "desired turbo pressure"

The desired pressure is what the engine ecu looks for and controls the turbo waste gate/variable vanes (via vacuum/electric) to achieve this.

Both the actual and desired turbo pressure should be much the same when driving.

This is what the turbo pressure (map) sensor looks like.. http://www.ebay.ie/sch/i.html?_trksid=p3907.m570.l1313&_nkw=saab+2.2+map+sensor+&_sacat=0&_from=R40

shamwari

OP, you can try cleaning the tip of the sensor with some carburettor cleaner. Sometimes they get a layer of coke and carbon build up on them which can give rise to strange running faults and the odd spurious fault code. Spray some of the cleaner on and see what happens

Often the reason for these type of errors on diesel engines is sticky variable vanes of the turbo leading to too high a boost => error code.

I guess it's a practical example of "don't shoot the messenger" as far as the pressure sensor is concerned.

Nissan doctor

You'd need to see the live date readings for the MAP sensor but the fault code seems to point to another fault. A turbo vane problem or a split intake/boost pipe or similar causing the manifold pressure to go outside the range that the sensor can read or the range it should be reading for a certain RPM/load.

PADRAIC.M

Hi, just to save you some hassle, all the 2.2 gave this problem, I have easily repaired 50 sans with these faults, basically it's a wiring fault with 4 specific pins on the engine control unit (which is actually apart of the fuel pump on the engine- I know, bad design)
It's basically 4 pins at fault in the 64pin connector, we usually replace the faulty pins but you can get away with tightening them.

woodynat2000

Padraic hello, late reply I know but can you please explain where the connector is in the engine bay? My swirl valve solenoid fails to work, however the part is fine so suspect wiring fault.

Thank you

Nathan

PADRAIC.M

2 years too late, the 2.2 engine doesn't have a swirl valve, you probably have the 1.9 engine, it's usually the manifold swirl flaps that fail in the intake manifold..