Sentra L4-1597cc 1.6L DOHC MFI (GA16DE) (1991)
Malfunction Indicator Lamp: Description and Operation
Non-California Models
Check Engine Lamp
The check engine lamp, located in the instrument cluster, illuminates to inform the driver of a malfunction in the E.C.U.s calculation functions. It
can also be used by the technician to identify trouble codes stored in the E.C.U.
It will also flash simultaneously with the red diode on the ECU when extracting codes or when inspecting feedback operation.