# HELP! VW Crafter Diagnostic Code P203B

**URL:** <https://community.cartalk.com/t/help-vw-crafter-diagnostic-code-p203b/189317>\
**Category:** Maintenance/Repairs\
**Tags:** van, volkswagen, emissions, diagnostics\
**Created:** [February 25, 2023, 1:08pm UTC](https://community.cartalk.com/t/help-vw-crafter-diagnostic-code-p203b/189317 "2023-02-25T13:08:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lochhead.sarah](https://avatars.discourse-cdn.com/v4/letter/l/8baadc/32.png) [@lochhead.sarah](https://community.cartalk.com/u/lochhead.sarah)\
**Post date:** [February 25, 2023, 1:08pm UTC](https://community.cartalk.com/t/help-vw-crafter-diagnostic-code-p203b/189317/1 "2023-02-25T13:08:05Z")

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hello! I need help reading the Freeze Frame from my diagnosis. The engine light came on in my VW Crafter 2010 and the code we received is P203B ($07e8) - Reductant Level Sensor Circuit Range/Performance.

My understanding is that this is to do with the DEF/Urea tank/sensor.

The Freeze Frame results are this:  
DTC P203B  
Load\_PCT 0.0  
ETC (c) 76  
MAP (kPa) 99  
RPM 0  
VSS (km/h) 0  
IAT (c) 24  
MAF (g/s) 222.22  
TP (%) 89.4  
FRP (kPa) 10140.0  
APP\_D (%) 5.9  
APP\_E (%) 5.1

\*Note, I haven’t driven the van in 3 months. Its been sitting on our driveway since the light came on.  
\*Note, the van is also in Sweden and so the emmissions regulations are strict here. Im not sure if that makes a difference to the outcome of the results.

Any advice is helpful at this point. Hoping to avoid a big bill at the mechanics if we can fix it ourselves.

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<div class="post-metadata">

**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [February 25, 2023, 2:09pm UTC](https://community.cartalk.com/t/help-vw-crafter-diagnostic-code-p203b/189317/2 "2023-02-25T14:09:46Z")

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The the code is most set because the level sensor in the DEF tank has failed. Install a new one.

> **[P203B Reductant Level Sensor Circuit Range/Performance](https://www.obd-codes.com/p203b)**
>
> How to quickly diagnose, repair, and causes of a P203B diagnostic code which indicates an unexpected electrical value from the reductant level sensor circuit.

The site link above shows the causes in order of liklihood.