Fault Codes/Rehlko/516667 31Rehlko516667 31UnclassifiedGeneralWhat This Code MeansSCR system failed to primeRelated Rehlko Fault CodesA-227600ACCY PWROVER WARNING516666 1AD516663 31AHET516663 0ALOP516600 4AUX516600 3BATTERYCHARGER FAULTBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 516667 31 on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about 516667 31GET THE ANSWERFree account required — we'll bring your question with you.