Honda ECU Trouble Codes
1 - Oxygen Sensor "A" (Primary)
2 - Oxygen Sensor "B" (Secondary)
3 - MAP Sensor (Manifold Absolute Pressure)
4 - CKP Sensor (Crankshaft Position Sensor)
5 - MAP Sensor (Manifold Absolute Pressure) Mechanical Problem
6 - ECT Sensor (Engine Coolant Temperature)
7 - TP Sensor (Throttle Position)
8 - TDC Sensor (Top Dead Center)
9 - CYP Sensor (Cylinder) Not a valid code for TB Injected Hondas.
10 - IAT Sensor (Intake Air Temperature)
12 - EGR Lift Sensor (Exhaust Gas Recirculation)
13 - BARO Sensor (Atmospheric Pressure)
14 - IAC Valve (Idle Air Control)
15 - Ignition Output Signal
16 - Fuel Injector System
17 - VSS (Vehicle Speed Sensor)
19 - Automatic Transmission Lock Up Control Solenoid Valve
20 - Electrical Load Detector
21 - VTEC Solenoid Valve
22 - VTEC Oil Pressure Switch
23 - KS (Knock Sensor)
30 - Automatic Transmission Signal: "A" / SEAF / SEFA / TMA or TMB
31 - Automatic Transmission Signal "B"
41 - Primary Oxygen Sensor - Heater
43 - Fuel Supply System
45 - System Too Lean or Too Rich (obd2 +)
48 - LAF Sensor (Lean Air Fuel)
54 - CKF Sensor (Crankshaft Speed Fluctuation)
58 - TDC Sensor 2 (Top Dead Center)
61 - Oxygen Sensor, Heated - Sensor 1 (Primary)
63 - Oxygen Sensor, Heated - Sensor 2 (Secondary)
65 - Oxygen Sensor Heater (Secondary)
67 - Catalyst system Efficiency Below Threshold
70 - Automatic Transmission Malfunction
71 - Cylinder 1 Misfire or a Random Misfire
72 - Cylinder 2 Misfire or a Random Misfire
73 - Cylinder 3 Misfire or a Random Misfire
74 - Cylinder 4 Misfire or a Random Misfire
75 - Cylinder 5 Misfire or a Random Misfire
76 - Cylinder 6 Misfire or a Random Misfire
80 - Exhaust Gas Recirculation Insufficient Flow
86 - ECT Sensor (Engine Coolant Temperature)
90 - Evaporative Emission Control System
91 - Fuel Tank Pressure Sensor Low Input Signal
92 - Evaporative Emission Control System

92-95 If you have a Check engine Light (CEL) or (MIL) then look under side passenger dash. On the very right you will see or feel a rubber green thing with 2 plugs. The one that has 2 pins, stick a piece of wire in both sides. Then look at your CEL. It will be blinking.
Long = 10
Short = 1

So Long Long Short is 21. Get it.

 

archeive this hoe

 

you might want to start by reading the 2nd thread down in the forum.....this info has been in there for years. Try reading next time