As many have experienced, my camshaft sensor failed without warning and I had to pay through the nose for a replacement. The price seemed unrealistic. $109.
That spurred me to find out how to fix one. You can do it for less than $15.

It is pretty simple. If you wish to do this, it will provide you a spare to keep handy or to help someone out as you wish.

The critical part is a Hall Effect Magnetic Sensor.
Bosch doesn't make sensors. It makes sensor assemblies.
The sensor is a Honeywell part, available commercially.


Key component: Honeywell 2AV54 Hall Effect Magnetic Sensor

Source: http://www.newarkinone.com ( might be others, I found this one )

Section Link: http://www.newark.com/industrial-control-automation_sensors

Component Link:

http://www.newark.com/96F1986/industrial-control-automation/product.us0?sku=honeywell-s-c-2av54

Newark In One Part Number: 96F1986


Approx cost $13.50

Data Sheet: http://sccatalog.honeywell.com/pdbdownload/images/2AV54.pdf

Repair Procedure:

1. Remove Camshaft Position Sensor, cut off the plug/cable near the casing of the sensor.

2. Remove black plastic cover on back of sensor casing.

3. Use a sharp center punch to make a depression in the center of each of the 2 riveted locations on the back of the sensor.

4. Use a sharp drill bit, 1/8" or so , to begin a drill location on the rivets.

5. Use a 1/4" bit or so and Carefully and Slowly drill off the rivet head until flush with back casing. Do not drill into rear face of casing. It is thin.

6. Use a small punch to knock the old sensor loose.

7. Unscrew the phillips head screw holding the sensor wires in place.

8. Carefully bend the new sensor wires across the bottom of the sensor in a flat position.

9. Place the new sensor on the old casing and line up the new rivet with the existing holes.

10. Press new sensor and rivets into a flush position.

11. Turn the assembly over and use a steel rod, bolt, or other object to press against the sensor side of the rivet.

12. Use a punch on the backside of the rivet and give it a couple of firm whacks to set the rivet head. The rivet is soft, so don't go for a home run.

13. Set the other rivet.

14. Wrap the sensor wires with some electrical tape or encase with heat shrink tubing. Leave an inch or so of wires exposed at the end.

15. Fish the wires through the grommet in the casing and secure the wiring assembly to the case with the previously removed screw and clamp.

15. Match up the wires from the new sensor to the old plug and wire assembly. Green to Green, Red to Red, and Black to Black.

16. Solder the wires and put some tape or heat shrink tubing over the splices.

17. Tape up the splice to give it some strength.

18. Install the sensor, plug in the cable, and You are done.

I believe this sensor assembly is also used on the V70 and other versions using the B5254 engine and/or dual OHC with camshaft position sensor.

Best wishes and good luck.