E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Anyone seen code P0503? Need some advice.



Reply
 
Thread Tools Search this Thread
      12-23-2011, 03:22 PM   #1
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Anyone seen code P0503? Need some advice.

I have searched and searched only one thread has come up with any info whatsoever and that thread was from 3 years ago. I am getting this code and is saying it has something to do with a speed sensor.

It is an intermittent SES light but I don't have a clue where to begin. Some people were saying in that older thread that it is a faulty connection with the procede which seems plausible since it doesn't happen all the time. It also makes it to where my cruise control doesn't work, but that also is only sometimes.

Has anyone ever seen this problem or can you guys give me an idea on where I should start to get this fixed? Not having cruise is annoying.
__________________

I have exhaust and an intake...
Appreciate 0
      12-23-2011, 07:13 PM   #2
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Bump for anything.
__________________

I have exhaust and an intake...
Appreciate 0
      12-24-2011, 11:55 AM   #3
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Morning bump
__________________

I have exhaust and an intake...
Appreciate 0
      12-24-2011, 03:39 PM   #4
JamesM3M5
Some dude
United_States
92
Rep
1,780
Posts

Drives: E92 335i
Join Date: Sep 2011
Location: Northern VA

iTrader: (0)

What is the associated verbage for that code? What is the hexadecimal code ID? Do you have a tool to check for codes in any other systems?
__________________
RRT
E92 335i/6MT with stuff and things
Appreciate 0
      12-24-2011, 03:42 PM   #5
Beemw335
Colonel
62
Rep
2,013
Posts

Drives: 335i
Join Date: Mar 2011
Location: My car is my home

iTrader: (2)

Your best bet is to remove procede, see if code(ses) comes up.
If not contact shiv about your procede.
Appreciate 0
      12-24-2011, 06:28 PM   #6
BrianMN
Banned
114
Rep
2,428
Posts

Drives: 4 Door Family Sedan
Join Date: Sep 2009
Location: Minneapolis

iTrader: (7)

That's a vehicle speed sensor code; intermittent. Have you been playing with the wheel speed sensors? Perhaps the road speed signal from the procede?
Appreciate 0
      12-24-2011, 06:42 PM   #7
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Quote:
Originally Posted by BrianMN View Post
That's a vehicle speed sensor code; intermittent. Have you been playing with the wheel speed sensors? Perhaps the road speed signal from the procede?
Yes thats what it read on the OBDII scanner, something like eratic and intermittent speed sensor. I haven't been playing with anything, I've had the procede in running the aggressive maps for 2 weeks and it didn't give me that code until after I changed some of the parameters in map 2 for PWM meth.
__________________

I have exhaust and an intake...
Appreciate 0
      12-24-2011, 08:01 PM   #8
JamesM3M5
Some dude
United_States
92
Rep
1,780
Posts

Drives: E92 335i
Join Date: Sep 2011
Location: Northern VA

iTrader: (0)

If you have a better code scanner that can give the BMW specific hex codes, it may give more information. Also if you can check other systems like the DSC and others, there may be a common problem that lies somewhere else such as a wheel speed sensor or bus fault.
__________________
RRT
E92 335i/6MT with stuff and things
Appreciate 0
      12-24-2011, 10:17 PM   #9
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Quote:
Originally Posted by JamesM3M5 View Post
If you have a better code scanner that can give the BMW specific hex codes, it may give more information. Also if you can check other systems like the DSC and others, there may be a common problem that lies somewhere else such as a wheel speed sensor or bus fault.
This is exactly what it gives you:

Vehicle Speed Sensor "A" intermittent/Erratic/High
__________________

I have exhaust and an intake...
Appreciate 0
      12-24-2011, 11:26 PM   #10
JamesM3M5
Some dude
United_States
92
Rep
1,780
Posts

Drives: E92 335i
Join Date: Sep 2011
Location: Northern VA

iTrader: (0)

What are you using for a scanner? Basically you need a more BMW specific tool to look into all of the modules that have anything to do with the cruise, ECU, wheel speed sensors, etc.

And I don't have my laptop and WDS with me, but you will have to check the wiring diagrams for vehicle speed output/input. There are two different DSC modules on the E9x, ATE-Continental and Bosch. Both report a combined vehicle speed output via CAN bus, but you may have to check to see whether the DSC has a direct speed output to the ECU - doubtful but possible. If there are any DSC problems, bus faults, JBE problems, you will need a tool to help you determine a starting point.
__________________
RRT
E92 335i/6MT with stuff and things
Appreciate 0
      12-25-2011, 09:29 AM   #11
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Quote:
Originally Posted by JamesM3M5 View Post
What are you using for a scanner? Basically you need a more BMW specific tool to look into all of the modules that have anything to do with the cruise, ECU, wheel speed sensors, etc.

And I don't have my laptop and WDS with me, but you will have to check the wiring diagrams for vehicle speed output/input. There are two different DSC modules on the E9x, ATE-Continental and Bosch. Both report a combined vehicle speed output via CAN bus, but you may have to check to see whether the DSC has a direct speed output to the ECU - doubtful but possible. If there are any DSC problems, bus faults, JBE problems, you will need a tool to help you determine a starting point.
I am not getting any other faults, DSC works flawlessly. I just get a random SES light. It will go off and cruise will work, comes back on, cruise doesn't work. I don't have anything better to scan it with.

I have read in some places that it can be a bad connection with the procede and I did modify the harness to integrate the PWM meth. So that has me thinking I may have a bad connection somewhere. Maybe I will start with just disconnecting the procede and checking all connections.
__________________

I have exhaust and an intake...
Appreciate 0
      12-25-2011, 12:38 PM   #12
blisstik
Lieutenant Colonel
blisstik's Avatar
No_Country
151
Rep
1,677
Posts

Drives: E92
Join Date: Jul 2009
Location: California

iTrader: (14)

Just throwing this out there. Would you happen to have the DP fix v3 that's got a dial? I'm assuming you have catless DPs.
Appreciate 0
      12-25-2011, 01:18 PM   #13
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
Quote:
Originally Posted by blisstik View Post
Just throwing this out there. Would you happen to have the DP fix v3 that's got a dial? I'm assuming you have catless DPs.
No I don't I just leave CANclear on on the procede.
__________________

I have exhaust and an intake...
Appreciate 0
      12-25-2011, 03:26 PM   #14
Bakeme521
Some say...
Bakeme521's Avatar
United_States
239
Rep
4,296
Posts

Drives: Fresh
Join Date: Mar 2010
Location: Baton Rouge n NOLA

iTrader: (12)

Garage List
2007 BMW 335i  [8.24]
FIXED. I took it apart, checked all the connections and cleared the codes and its not coming back. Tried the cruise control at various speeds and it is working now. Thanks for all the input guys, glad I got that solved.
__________________

I have exhaust and an intake...
Appreciate 0
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 05:18 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST