Fault Codes:Hyundai HX220 NL EPFC 2771（3226-9）
Fault Description:
Aftertreatment outlet NOx sensor -Abnormal update rate.No communications or an invalid data transfer rate detected on the J1939 data link between the ECM and the aftertreatment outlet NOx sensor. Post-treatment outlet nitrogen oxide sensor - Abnormal update rate. The J1939 data link communication between the ECM and the NOx sensor at the post-processing outlet is interrupted or the data transmission rate is invalid
Fault Location:
Possible reduced engine performance. It may lead to a decrease in engine power
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