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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Service Engine Soon



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      01-24-2014, 08:49 PM   #1
SimplyBS
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Service Engine Soon

On the way home today had the light come on. Checked the codes and the following were logged.

P205B
P3EED
C0D32

I found some info on the first, but can not find anything on the other two.
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      01-24-2014, 09:29 PM   #2
GreekboyD
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2009 BMW 335d  [4.00]
Are you running an engine tune?
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      01-24-2014, 09:34 PM   #3
SimplyBS
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JBD. Do you know what the codes mean?
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      01-24-2014, 09:36 PM   #4
GreekboyD
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Quote:
Originally Posted by SimplyBS View Post
JBD. Do you know what the codes mean?
My buddy says the first one is DEF tank related while the others might be due to a tune, the DDE spitting out the codes. Says the first one is the main concern.
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      01-25-2014, 03:21 PM   #5
SimplyBS
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Reset the code yesterday and the 205 and C code returned.
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      01-25-2014, 04:13 PM   #6
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What type of scanner do you have?
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      01-25-2014, 04:46 PM   #7
SimplyBS
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Using an ELM327 wifi using EOBD facile iphone app. Cleared with JBD cantool.
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      01-26-2014, 07:21 PM   #8
Brad335d
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OK so code one I CANNOT find a P205B but I CAN find a P20B5 which has 3 sub codes which can be further diagnosed with an OEM capable scan tool. I will post all 3 sub codes for you. Your scanner in only reading the generic P20B5 code and not the manufacturer specific code of i.e. 4601, 49E2, etc. The code P3EED and COD32 DO NOT correspond to any code I have listed in my AllDataPro system. If you are using a generic scan tool which I suspect you are it is most likely generating an ambiguous code that doesn't apply to the car.


1) 4601 - P20B5

Information saved in
DDE

Fault code
4601 - P20B5

Fault text
DDE: Reducing agent, output of delivery module heater too
low: Open circuit, heater circuit

Fault description
The error is recognized when no lead value stroke has been
recognized after a specific period of time, meaning that the
lead value remains below the threshold 0 1/Ohm.

Condition for fault identification
Test condition:
A check for this error runs once per heating cycle.
Voltage condition:
A check for this error runs once per heating cycle.

Condition for fault memory entry
Event debounced (1)

Action in service
Check resistance of delivery module heater unit.
Replace delivery module.
Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
Delivery module heating unit resistance:
2.9 - 5.5 ohms

2014 ALLDATA LLC. All rights reserved. Terms and Conditions




2)49E2 - P20B5

Information saved in
DDE

Fault code
49E2 - P20B5

Fault text
DDE: Heating, SCR system, power peaks: maximum heat
output too high

Fault description
Monitoring peak power in reduction agent pressure line
heater. A short circuit is recognized when the peak heater
output is above a limit value defined based on operating
point and the peak power test has been completed.
The peak power test is terminated when one of the following
conditions is met:
- An activation signal has been transmitted to the heater for
at least 10000 ms.
- When the peak power test has been recognized as
terminated based on the shift in the heater's power.

Condition for fault identification
Test condition:
The error check runs once the peak power test has been
completed.
Voltage condition:
The error check runs once the peak power test has been
completed.

Condition for fault memory entry
Event debounced (1)

Action in service
Check resistance of heater elements.
Check heater wires for short circuits to ground.
Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none

2014 ALLDATA LLC. All rights reserved. Terms and Conditions




3) 4C72 - P20B5

Information saved in
DDE

Fault code
4C72 - P20B5

Fault text
DDE: Reducing-agent pressure-line heating: Short circuit,
heater circuit

Fault description
Monitoring of reduction agent pressure line heating. The
diagnostic trouble code is logged when the measured current
draw from the deactivated heater exceeds the limit value
150 uA.

Condition for fault identification
Test condition:
The error check runs continuously when the urea tank heater
is deactivated.
Voltage condition:
The error check runs continuously when the urea tank heater
is deactivated.

Condition for fault memory entry
Debounce (15000 ms)

Action in service
Check the control wire and the diagnostic wire.
If wiring and plug connections are OK:
Check plug connections for moisture.
Use diagnostic system to test heating systems.
Replace power switch.
Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
The power switch transmits an activation signal to all
heaters. The first heater circuit is for the active tank heater,
the second heater circuit is for the delivery module and the
metering line.
The control wire should not be in contact with ground or B+
when the DDE and power switch are unplugged.

2014 ALLDATA LLC. All rights reserved. Terms and Conditions
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'11 BMW 335d Sport
-JBD
'07 Shelby GT500
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Last edited by Brad335d; 01-26-2014 at 07:26 PM.
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