35d Reducing Agent Passive Tank Sensor Failure

[markehz]

Originally Posted by Ozer

My Low DEF came on and the heater element code at the same time.
I put 2.5gl into the passive tank then few weeks later when i got the BMW bottle i also put that in. Few days later my light went off and its been a week, no stored codes or anything. Knock on wood.

Do you remember what this code was?
I plugged in mine yesterday and it gave me two codes
474C - DFC
4BAC - Reducing agent active tank level sensor signal

[Ozer]

P205A i believe, SCR tank code. Im at 130k miles

[markehz]

Originally Posted by Ozer

P205A i believe, SCR tank code. Im at 130k miles

I think the 4BAC translate to a P203A code.
I'll start by filling up both tanks and see what this gives.

[Ngkx535d]

Do these codes apply to the quick fix described in the post?

4BCC - reducing agent passive tank full level sensor

4B93 - Particulate filter system

4B1C - fuel filter heating, activation

[RADRACR]

johnmn > Can you please update the photos?

[johnmn]

Can you see them now?

[RADRACR]

no

[johnmn]

Hopefully you see them now. I switched to another photo hosting service.

[RADRACR]

Perfect. Thank you. I copied it to my hard drive this time

[BMWagon]

FYI, I know this post is for a the passive tank, but I do see people talking about active as well. BMW has extended the warranty on the SCR Active Tank Module to 10year/120K miles. I got a code 004bAC earlier this year and my BMW dealer replaced the active tank for $free.99 .