2006 volvo s40 2.4i crankshift sensor location ?

This may help:
http://www.cadillacforums.com/forums/ht4100-4-1-4-5-4/92061-location-cam-position-sensor-95-4-a.html

Instructions

1. • 1 Open the engine hood by pulling the hood release latch located on the lower kick panel on the driver's side of the Volvo S40. Lift the hood up and prop it on the hood prop.
     
   • 2 Locate the steering shaft that extends from the firewall to lower suspension located inside the engine compartment, by the front right wheel. Halfway down the shaft, you will locate the power steering pump. The pump is a black container that bolts to the driver's side of the engine block. On the top, you will find a cap that says "Power Steering Fluid."
     
   • 3 Look to the left of the cap. Bolted to the power steering pump is the thermostat temperature sensor. The sensor has a black round cap and a black wire extending out of the top.
     

Read more : http://www.ehow.com/how_7439182_locate-temperature-sensor-volvo-s40.html

VOLVO SUCKS

The crank sensor is located in the front of the engine just above the oil filter.

I'm afraid that my online resource doesn't have data on this vehicle. Which means that the best source of information will be a Repair Manual from the manufacturer, or a Haynes or Chilton manual if available.

One can try to locate the sensor by looking for a one or two wire sensor that screws into the 'hot' part of the engine block or cylinder head.

The above part sells for about $35 at Autozone.

behind the front bumper

Check your fuses to be sure it is not as simple as that. They fuse locations may be listed in your owner's manual. If you don't have the manual. Here is a link to find one online.
http://www.onlinefreeebooks.net/automotive-machinery-power-equipment-ebooks/volvo/volvo-xc90-owners-manual-pdf.html

I hope this helps. God bless!

Make sure the abs sensor is plugged in all the way.. And also make sure that the abs ring.. was not damaged in the process of putting on the new bearing...

P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
Air flow sensor problem, maybe causing the second code to go off.
The air flow sensor should be right near your air filter box.
P0170 Fuel Trim Malfunction (Bank 1) Oxygen Sensor

if certain that car has no sensor then carry on with self preservation (plus,leads,filter and such) as the warning light does come on sometimes to tell you to service/ take to a garage to service.