1.6.6.2 Monitoring Function - Pressure Range Test

P303A/P303B, P303C/P303D 

Additionally, the pressure is monitored for exceedances of the absolute range. When the pressure value exceeds the lower calibrated threshold, a minimum fault code is stored (P303C/P303D). When the pressure value exceeds the upper calibrated threshold, a maximum fault code is stored (P303A/P303B).