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Junior Member
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Posts: 204
Join Date: Apr 2009
Car: 2007 335i
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MAP sensor codes with JB4 installed -
11-20-2020, 09:00 PM
I have an S55 JB4 that is causing a CEL with two MAP sensor codes. I’m wondering if I may have touched the USB cable to the positive jumper lug and fried it. The codes were:
* Ambient pressure sensor shorted to positive
* Boost pressure sensor shorted to positive
Sorry, I forgot to note the numeric portion of the codes. I removed the JB4 and cleared the codes and the car seems okay. What components on the board do I have to replace?Thanks!
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Tuner
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Posts: 32,859
Join Date: Jan 2008
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11-21-2020, 10:16 AM
If the car runs OK with the JB4 out then the TMAP ground is likely OK. You can always send in the JB4 board if you want us to test it out on the bench.
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Junior Member
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Posts: 204
Join Date: Apr 2009
Car: 2007 335i
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11-22-2020, 07:36 AM
Quote:
Originally Posted by Terry @ BMS
If the car runs OK with the JB4 out then the TMAP ground is likely OK. You can always send in the JB4 board if you want us to test it out on the bench.
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Yep, car is okay with JB4 removed. Do you sell replacement boards? I might just order one since that seems to be the issue. Thanks! |
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Tuner
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Posts: 32,859
Join Date: Jan 2008
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11-22-2020, 10:18 AM
Quote:
Originally Posted by Eleventeen
Yep, car is okay with JB4 removed. Do you sell replacement boards? I might just order one since that seems to be the issue. Thanks!
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Yes we have them on our site: https://burgertuning.com/products/re...16493333676147
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Junior Member
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Posts: 204
Join Date: Apr 2009
Car: 2007 335i
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11-22-2020, 10:44 AM
Quote:
Originally Posted by Terry @ BMS
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Perfect! Thank you!!! |
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Junior Member
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Posts: 204
Join Date: Apr 2009
Car: 2007 335i
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12-13-2020, 03:45 PM
I received and installed the new board. No CEL's or anything, but there doesn't seem to be any CAN bus communication. I can't data log and holding the BC button on the turn signal stalk does not bring up the JB4 menu. I have it tapped directly into the yellow and black / blue CAN bus wires under the hood using the good posi-tap connectors you sell. Brown to yellow and green to black / blue. Any ideas on what to look at? I noticed the new board said EWG Rev 2 and my old one says x55 Rev 3. Can you confirm I received the correct board for an S55? Thanks!
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Tuner
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Posts: 32,859
Join Date: Jan 2008
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12-13-2020, 10:01 PM
CANbus needs to be attached to OBDII, or run to OBDII for tapping as shown.
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Junior Member
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Posts: 204
Join Date: Apr 2009
Car: 2007 335i
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12-14-2020, 05:27 AM
Quote:
Originally Posted by Terry @ BMS
CANbus needs to be attached to OBDII, or run to OBDII for tapping as shown.
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Perfect! Thank you, Terry!!! I was using the instructions for the pre-OBDII version of the S55 JB4 and didn’t realize there was a difference. Thanks, again  |
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Junior Member
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Posts: 204
Join Date: Apr 2009
Car: 2007 335i
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12-14-2020, 05:48 AM
I just went ahead and ordered the OBDII cable. I was hoping to avoid unplugging it every time I use the OBDII port for something else (which honestly isn’t that often), but that is actually more convenient than switching to Map 0 since I’m already down there...
I always over complicate things LOL.
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Tuner
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Posts: 32,859
Join Date: Jan 2008
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12-14-2020, 11:16 AM
You can just route the wires and posi-tap the back, but it has to be connected to the gateway not the PTCAN.
Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!
It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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