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New engine will not start

Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 2006 BMW 330
  • 3.0L
  • 6 CYL
  • 2WD
  • MANUAL
  • 50,000 MILES
The car still won't start and give p0335 error code. I have changed 4 crankshaft sensor and still it won't start. I even got 2 crankshaft sensor from a working vehicle and still it won't start and still throw error code p0335 (crankshaft sensor).
What can I do now?
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Tuesday, August 11th, 2020 AT 11:37 AM

14 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

If you have replaced the sensor, then it is likely a wiring issue. The code you provided is general. There are two specific BMW codes. See the attached pic.

Now, if you can't get that, chances are it is related to the signal wire at the sensor. It is either open, shorted to power, or shorted to ground. So, check the wires to make sure nothing was damaged or pinched when the engine was installed.

If you take a look at pic 2, it shows the signal wire is the yellow one in the harness. With the key on, confirm there is no power to it. With the key off, confirm there is no continuity to ground. If there isn't power or ground, you have an open circuit somewhere in that wire.

Please understand this is an educated guess at this point. I hope you understand. I am basing this on the general code and the fact that you have replaced the sensor with a known good one.

Let me know what you find.

Joe
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Tuesday, August 11th, 2020 AT 7:13 PM
Tiny
UZOMAKIY OKPALA
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  • 41 POSTS
The engine crank and I have used a multi-meter to check voltage at the socket and with key on there is 12v pin1 orange wire, 5v pin 3 yellow wire and pin 2 is through to ground.
I have inspected the wires to the sensor and no cut where found.
At first when the engine was inserted it crank and started for some seconds then cut off. When I tried it again I noticed there was no spark to coil and no pulse to injector. I found a fuse was bad and replaced it and got back spark and pulse, after that the whole crankshaft sensor problem now started.
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Wednesday, August 12th, 2020 AT 3:57 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

Here is what I'm seeing and why I suspect it is something with the signal wire. Take a look through this. This is specific to the manufacturer's code.

___________________

2006 BMW 330i Sedan (E90) L6-3.0L (N52)
2A9C - P0335 (DME)
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection Manufacturer Code Charts Digital Motor Electronics 2A9C 2A9C - P0335 (DME)
2A9C - P0335 (DME)
2A9C - P0335

Information saved in
DME

Fault code
2A9C - P0335

Fault text
Crankshaft sensor, electric

Fault description
Crankshaft Position Sensor 'A' Circuit

Condition for fault identification
Test condition:
Terminal condition: Terminal 15 on
Voltage condition:
Voltage in onboard electrical system > 10 V

Condition for fault memory entry
none

Action in service
1. Check signal wire for short to positive, ground, opens and
interference signals
2. Replace crankshaft sensor

Fault effect and breakdown warning

Driver information
Warning light:
NO

Service instruction
none
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Wednesday, August 12th, 2020 AT 9:29 PM
Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 41 POSTS
I checked the signal wire for short to positive or ground and it was not.
Can bad plugs trigger that error code?
Can the can the crankshaft signal plate also trigger the code?

Am seriously confuse on where the problem and solution.
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Thursday, August 13th, 2020 AT 1:45 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

The plugs wouldn't cause it. If there are no wiring issues, you know the sensor is good, and everything is connected, that leaves the PCM. Have you done anything as far as checking it?

Joe
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Friday, August 14th, 2020 AT 12:10 PM
Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 41 POSTS
How will I check the PCM to know if it good to not?
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Friday, August 14th, 2020 AT 1:40 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
The best thing to do would be go to the PCM and check for a power supply and ground right at the PCM. Other than that, it will need to be tested by someone that has the software to actually check it.

Joe
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Friday, August 14th, 2020 AT 5:05 PM
Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 41 POSTS
Have seen the problem and it was the oil separator angle connector that bad. It was shot to the positive pin of the sensor which was also connected the crankshaft sensor wires. I have ordered for the parts and waiting for it to arrive.
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Tuesday, August 18th, 2020 AT 4:45 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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That is likely the problem. Let me know if the new parts fix the issue.

Take care,
Joe
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Tuesday, August 18th, 2020 AT 6:51 PM
Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 41 POSTS
Please how can I test the angle connector sensor with multi-meter? When I tested it gave me 4 omhs with the continuity sound on. Even the one a purchased read the same way.
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Wednesday, August 19th, 2020 AT 10:33 AM
Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 41 POSTS
Please can I get also I guide on how to remove the crankshaft signal plate from my old engine?
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Wednesday, August 19th, 2020 AT 1:15 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I am trying to send information to you and it will not go through. I have the owner of the site looking into it. As far as the testing, BMW recommends the use of an oscilloscope. The sensor is mounted under the starter.
I will try to get specifics to you by tomorrow. Sorry about the delay.

Joe
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Thursday, August 20th, 2020 AT 10:14 PM
Tiny
UZOMAKIY OKPALA
  • MEMBER
  • 41 POSTS
The angel connector I bought was good I connected it an took the reading at the crankshaft sensor socket and the voltage did not cut.

Now am still getting the p0335 and the car won't start.

I just noticed that there is a loud sound of like metal jamming together coming from the engine anytime am starting the car.

And still saying crankshaft sensor.
Can the reluctor ring remove or pull?
What can make the crankshaft sensor not receive signal from the crankshaft?
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Thursday, August 20th, 2020 AT 11:28 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I know we discussed on your other posts and Joe has the exact same conclusions.

Did you back the transmission up to find the source of the noise that you indicated while cranking in your other post?

Roy
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Friday, August 21st, 2020 AT 5:00 AM

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