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Reading Codes
Important: Complete ALL steps in “Vehicle Preparation” before reading trouble
codes.
• Honda uses various computerized engine control systems.
• Trouble codes are read by:
– Observing LED’s (Light Emitting Diodes) built into the engine computer
OR
...
– Counting flashes on the “CHECK” engine light.
• Use the chart below to find the code reading test procedure for your vehicle.
Remember: Vehicles using the instrument panel (“CHECK” engine) lamp for reading
trouble codes do NOT require engine computer access.
Year Usage System Test Pg.
1985 Accord SEi, Civic CRX Si 4 LED 32
1986 Accord LXi, Prelude (all) 1 LED 34
Civic CRX Si, Civic Si 4 LED 32
1987 Accord LXi, Prelude (all) 1 LED 34
Civic CRX Si, Civic Si 4 LED 32
1988 Accord LXi, Civic (all), Civic CRX Si,
Prelude (all) 1 LED 34
1989 Accord LXi, Civic (all), CRX, Prelude (all) 1 LED 34
1990 Accord (all), Civic (all), CRX, Prelude (all) 1 LED 34
1991 Accord (all) panel lamp 37
Civic (all), CRX, Prelude (all except 2.1 Liter) 1 LED 34
Prelude with 2.1 Liter 1 LED 37
1992 All models panel lamp 37
HONDA