Conditions for Setting the DTC
WARNING: This page is about a different variant/trim than selected.
P203B
The ECM receives a serial data message from the reductant sensor module that the reductant level sensor indications are not plausible.
P203C, P21AA and P21AF
The ECM receives a serial data message from the reductant sensor module that the emission reduction fluid tank level sensor 1, 2 or 3 voltage is less than 0.17 V for greater than 3 s. A voltage within this range indicates a short to ground.
P203D, P21AB and P21B0
- The ECM receives a serial data message from the reductant sensor module that the emission reduction fluid tank level sensor 1, 2 or 3 voltage is between 3.56-4.74 V for greater than 3 s. A voltage within this range indicates an open circuit.
Or
- The ECM receives a serial data message from the reductant sensor module that the emission reduction fluid tank level sensor 1, 2 or 3 voltage is greater than 4.74 V for greater than 3 s. A voltage within this range indicates a short to voltage.