my check light is car is showing DTC41. on 1990 Buick LeSabre

the camshaft sensor and EGR valve have been replaced.

Asked by for the 1990 Buick LeSabre
1 answer 1 comment
seek a proper diag and est from a good mech as ther is a diag procedure to follow. poss the circuit has issues and not the sensors
thanks. good to have a resource to go to.