We have a check engine light that clears itself. Engine fault code SPN 3226 4 OC 2. OBD reader reads. Is this common, or should we have it looked at, do we need have a repair done?
DTC:1887 Aftertreatment 1 outlet Nitrogen Oxide [NOx] sensor circuit below normal or short to low voltage. Status Active Lamp: Amber Count: 4
DTC: 3714 Engine protection torque derate.
Status Lamp: Amber Count: 16
DTC: 1117 Power supply lost with ignition ON - data erratic, intermittent or incorrect
Status inactive Lamp: None Count 2
DTC:2771 Aftertreatment 1 outlet Nitrogen Oxide [NOx] sensor update rate abnormal
Status Inactive Lamp: None Count: 1
DTC:285 SAE J1939 multiplexing PGN time - out error - update rate abnormal
Status Inactive Lamp: Amber Count: 1
DTC:1887 Aftertreatment 1 outlet Nitrogen Oxide [NOx] sensor circuit below normal or short to low voltage. Status Active Lamp: Amber Count: 4
DTC: 3714 Engine protection torque derate.
Status Lamp: Amber Count: 16
DTC: 1117 Power supply lost with ignition ON - data erratic, intermittent or incorrect
Status inactive Lamp: None Count 2
DTC:2771 Aftertreatment 1 outlet Nitrogen Oxide [NOx] sensor update rate abnormal
Status Inactive Lamp: None Count: 1
DTC:285 SAE J1939 multiplexing PGN time - out error - update rate abnormal
Status Inactive Lamp: Amber Count: 1

