P0380 is a circut fault/engine cranked on cold GP's. Will reset itself after 3 cold/hot/cold run cycles if doesnt reoccur during that time. If the CEL is constantly lit, a fault is reoccuring.
If relay powers GP's you might want to see if it cuts out too early after starting. Should stay on for ~2 min after a cold start. If so, need to determine if is relay or K40.
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Terry Allison
N. Calif. & Boca Chica, Panama
09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
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