astra 1.7 dti dash lights?

hi just bought a astra 02 reg 1.7 dti when i turn on ignition all lights turn on exept engine light and car with spanner light im sure they should come on and go off after car starts unless fault .the steering suround has been opened and passinger side panel also was opened but why i resd in the mot advise engine light on . any one can help tried to scan car but scanner says link error help