diff --git a/dumux/porousmediumflow/2pnc/implicit/properties.hh b/dumux/porousmediumflow/2pnc/implicit/properties.hh
index 1ff692797b4d7c168039b536006d7bdaa731efea..b78abac3af17daf5e10d965a502888af72fd0f57 100644
--- a/dumux/porousmediumflow/2pnc/implicit/properties.hh
+++ b/dumux/porousmediumflow/2pnc/implicit/properties.hh
@@ -128,10 +128,10 @@ public:
 /////////////////////////////////////////////////
 // Properties for the non-isothermal 2pnc model
 /////////////////////////////////////////////////
-SET_TYPE_PROP(TwoPNCNI, IsothermalVolumeVariables, TwoPNCVolumeVariables<TypeTag>);    //! set isothermal VolumeVariables
-SET_TYPE_PROP(TwoPNCNI, IsothermalLocalResidual, CompositionalLocalResidual<TypeTag>); //! set isothermal LocalResidual
-SET_TYPE_PROP(TwoPNCNI, IsothermalIndices, TwoPNCIndices<TypeTag, /*PVOffset=*/0>);    //! set isothermal Indices
-SET_BOOL_PROP(TwoPNCNI, NiOutputLevel, 0);                                             //! temperature is already written by the isothermal model
+SET_TYPE_PROP(TwoPNCNI, IsothermalVolumeVariables, TwoPNCVolumeVariables<TypeTag>);     //! set isothermal VolumeVariables
+SET_TYPE_PROP(TwoPNCNI, IsothermalLocalResidual, CompositionalLocalResidual<TypeTag>);  //! set isothermal LocalResidual
+SET_TYPE_PROP(TwoPNCNI, IsothermalIndices, TwoPNCIndices<TypeTag, /*PVOffset=*/0>);     //! set isothermal Indices
+SET_TYPE_PROP(TwoPNCNI, IsothermalVtkOutputFields, TwoPNCVtkOutputFields<TypeTag>);     //! set isothermal output fields
 
 //! Somerton is used as default model to compute the effective thermal heat conductivity
 SET_PROP(TwoPNCNI, ThermalConductivityModel)
diff --git a/test/references/fuelcell2pncbox-reference.vtu b/test/references/fuelcell2pncbox-reference.vtu
index 98940fec34c03d133f944cf93d3d85c2706a1145..68dfaa91c95de98439e201a98685b4c0dc1c6aaa 100644
--- a/test/references/fuelcell2pncbox-reference.vtu
+++ b/test/references/fuelcell2pncbox-reference.vtu
@@ -153,21 +153,6 @@
           0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
           0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
         </DataArray>
-        <DataArray type="Float32" Name="temperature" NumberOfComponents="1" format="ascii">
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310
-        </DataArray>
         <DataArray type="Float32" Name="Kxx" NumberOfComponents="1" format="ascii">
           5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11
           5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11
diff --git a/test/references/fuelcell2pnccc-reference.vtu b/test/references/fuelcell2pnccc-reference.vtu
index d334911546ac6436af3c8c09bda478f21c746b7f..afcc2136ccf658df7c07521164b3027b51c5bba1 100644
--- a/test/references/fuelcell2pnccc-reference.vtu
+++ b/test/references/fuelcell2pnccc-reference.vtu
@@ -133,19 +133,6 @@
           0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
           0.2 0.2 0.2 0.2 0.2 0.2
         </DataArray>
-        <DataArray type="Float32" Name="temperature" NumberOfComponents="1" format="ascii">
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310 310 310 310 310 310 310
-          310 310 310 310 310 310
-        </DataArray>
         <DataArray type="Float32" Name="Kxx" NumberOfComponents="1" format="ascii">
           5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11
           5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11 5e-11