Code 34
KOEO (Engine Off)= EVP:See if code 84 is present; PFE:low exhaust backpressure, blocked sensor tube, bad sensor
KOER (Engine Running)= EGRC/EGRV: EGR valve opening not detected; EVR: EVP or PFE signal too high
CM (Continuous Memory)= PFE: check for blocked sensor tube; EVP...