Nissan and Datsun Workshop Service and Repair Manuals > D21 Hardbody 2WD L4-2389cc 2.4L SOHC MFI (KA24E) (1990) > Powertrain Management | Computers and Control Systems | Relays and Modules - Computers and Control Systems | Engine Control Module | Component Information | Testing and Inspection | Diagnostic Trouble Code Tests and Associated Procedures

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Engine Control Module: Diagnostic Trouble Code Tests and Associated Procedures

The ECU detected that the "calculation function" is out of the normal range.

Code 31 - ECU

Nissan and Datsun Workshop Service and Repair Manuals