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Old 11-16-2013, 06:23 AM   #1
Moe.Jo.Joe.jo
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Join Date: Nov 2013
Location: Ohio
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My Ride: 2001 325xi
Unhappy P0335 Crankshaft position sensor code wont go away!

Greetings, this is my first post so here we go. I have a 2001 325xi. I suspect the problem first started with my battery dying because that's about when I began to notice the loooong crank-times (not a good look), the lose of POWER (the absolute worst for the bimmer) and the RPM's tending to alternate up and down between 300-1000 rpm's ( like breathing). After refilling the battery with water and charging it, the long cranks remained. Checked the codes it threw P0335 crankshaft position sensor. I got a standard brand sensor from World auto replaced the BMW sensor. It didn't clear the code or restore power. Bought a new battery, changed the fuel filter, replaced the spark plugs, and got another sensor from the same place and replaced it. I must say the car rides nicer, but still has the long crank, not all the power back and the P0335 code returns immediately, I also notice a burning smell as I exited the car after I did the work, too tired now, will check after sleeeeeeppppp oh sorry. Please help!!! Dont wanna keep buying bad sensors or it could be something else? Thanks...
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Old 11-16-2013, 11:00 AM   #2
NumbaOneNewb
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P0335 Crankshaft position sensor code wont go away!

Your ccv is probably clogged and vacuum leak. Intake boot ripped. Wait, disconnect your maf and try starting it. One last thing. If cranking takes long punch gas pedal when starting. If it helps you must've not plugged it in right
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Old 11-16-2013, 12:44 PM   #3
2003silver330i
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I wanted to add that you need to visually inspect the connector for any damage or loose contact pins. Also, inspect the wiring harness for any visible damage although it is usually best to check resistance readings from the PCM connector. This rules out any wiring problems from the start
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Old 11-18-2013, 10:27 AM   #4
Moe.Jo.Joe.jo
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I checked and cleaned and re-crimped the connections to all the electrical plugs in the engine compartment including the connector to the crankshaft sensor. I also made sure the sensor was in tight and plugged in. While this did restore some of the power I was missing, the long crank and lack of power still remained. Is there any way I could test the sensor and the wiring harness without going to the Dealer?
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Old 11-20-2013, 06:34 PM   #5
bigdave666
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i have the same problem, i have replaced the lambda sensors, spark plugs, crankshaft sensor 3 times, injection loom (which covers the crankshaft sensor plug, all with oem spec parts, and then i spoke to a friend of mine i haven't seen for a very long time, years in fact who worked at a bmw main stealers for 15 years, he said every time they have a 325i or 330i with a m54 engine in, they did a dme re flash first and that sorted it in 95% of the problems he said just do a dme re flash and that will sort all problems, he is doing it saturday in his garage.
my car just before i bought it had a brand new fully rebuilt crate engine from bmw at the cost of 6500 only 3000 miles ago, so i am thinking he maybe right well i will find out soon and let you post the result,
check out dme re flash..... this my help quite common on the early e46 325i and 330i so he said
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Old 11-21-2013, 04:11 AM   #6
Moe.Jo.Joe.jo
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Good looking out bigdave666, I will investigate how to do a re-flash. In the meantime I will check back after saturday and see if it solved your problems.
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