Conditions for Running the DTCs

P214F or P21DD

• DTC P205C, P20B9, P20BB, P20BC or P20C0 is not set.
• Reductant tank heater is commanded On for greater than 50 s.
• Battery voltage is greater than 11 V for at least 3 s.
• The engine is off for greater than 5 minutes.
• Engine speed is greater than 600 RPM for at least 10 s.
• Reductant level is not in restriction or empty level state.
• Initial reductant tank temperature is less than 42°C (108°F).
• The DTCs run once per key cycle after the above conditions are met.

P221C or P221D

• The reductant line heater is commanded On.
• Battery voltage is greater than 11 V for at least 3 s.
• The engine is Off for greater than 5 minutes.
• Engine speed is greater than 600 RPM for at least 10 s.
• Reductant level is not in restriction or empty level state.
• The DTCs run once per key cycle after the above conditions are met.

P221E or P221F

• The reductant pump heater is commanded On.
• Battery voltage is greater than 11 V for at least 3 s.
• The engine has been Off for greater than 5 minutes.
• Engine speed is greater than 600 RPM for at least 10 s.
• Reductant level is not in restriction or empty level state.
• The DTCs run continuously once the above conditions are met.