Got to go 400 kms sun have codes;error codes p1537, bank one stuck open. p156,ho. p161,ho2522 heater circuit Will it damage my engine to try as is; Thanks for replies I have 1996 GL Just bot it 4 months spent $1500. so far it passed emissions 3 months ago I found hole in vac line replaced still have all these codes hear vac leak behind dash.It runs good but worried about future problems