Q: Camshaft position sensor keep failing after i replace it. after 2 miles the check engine comes back on for that sensor 2003 BMW 745Li

asked by on

camshaft positon sensor keeps failing after i replace it

My car has 70000 miles.
My car has an automatic transmission.

Hello - you don’t mention the specific problem codes you are getting, but the problem you are having may not be the cam sensor itself. Rather, the problem could be the "v-shaped" timing chain guide between the cylinder banks. This engine is notorious for wear on this guide, which changes cam timing for Bank 2 (passenger side) of the engine, and causes a variety of cam timing problem codes. I recommend a loss of power inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, confirm this diagnosis, and give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Camshaft position sensor keep failing after i replace it. after 2 miles the check engine comes back on for that sensor 2003 BMW 745Li

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: automatic transmission works fine in reverse, 1st, and 2nd, but revs the engine in 3rd 4th 5th only goes 30mph

You could have a defective vehicle speed sensor, transmission shift solenoids, transmission control module, valve body in transmission, throttle position sensor and/or the interconnecting wiring, fuses, and terminals (involving the electrical components) could have a defect. Another possibility is an...

Q: Where is the a.c. compressor located on a 2006 range rover hse

The relay is in the main under hood fuse box and that box is typically right next to the battery. If you suspect an issue with the relay it should be tested prior to condemning it. Such testing is straightforward...

Q: Blue smoke oil leak

Hello. The valve cover and the spark plug tube seals may be leaking oil causing the blue smoke you see coming from the tail pipe of your 2004 BMW 745Li. The valve cover gasket and spark plug tube seals are...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...