Getting Fault Codes from a Honda BF 200 or BF 225
You can retrieve the codes from the EPROM in the on-board engine computer - the Electronic Control Module or ECM.
This procedure works ONLY with engines that are equipped with the four-light key switch – green = oil pressure; red = coolant temperature; red = alternator output; red = malfunction indicator light (MIL.)
Take off the engine cover and the plastic cover over the electronics on the front of the engine. There you will see a red four-pronged female plug. Remove the plug from its holder. Use a paper clip to shunt the lime green/white wire to the black wire – that is, the two wires that are closest to the engine when the red service connector is correctly set in its holder. If in doubt, invest in a SCS service connector, which you can order online - part number 070PZ-ZY30100.
Once connected, turn on the key switch and observe the number of blinks on the check engine (MIL) light. The blinks will repeat until you turn off the key.
If the MIL comes on, then stays on, there are no codes in the EPROM. This is contrary to what it says in the Helm Shop Manual (Page 5-14.)
If the MIL starts blinking, then count the blinks, which will indicate the fault code. You may get long blinks and short blinks. For example, two long blinks, followed by five short blinks, would be a fault code 25. The blink sequence will repeat itself until you turn the key off. If there is more than one fault, you will get multiple fault codes. For example, three short blinks, followed by two long blinks and five short blinks would be fault codes 3 and 25. Post the number of blinks and I will try to tell you what the error code is. Or, send me an e-mail at
[email protected] and I will send you the codes.
If you get only one blink, that repeats about every three seconds, that may be a faulty O2 sensor. If a faulty O2 sensor is indicated, first check the wiring and connector. A loose or corroded connection can set off that alarm. Also, a misfiring spark plug or failing coil can generate that fault code.