Hey guys. I just bought a 2002 sixth-generation VFR, and I'm getting error 24. I think it's oxygen sensor #2. I already checked the continuity from the sensor connector to the engine control module (ECM) connector, and everything seems fine. I installed a 330-ohm resistor to bypass the sensor, but nothing. The error 24 persists. 1. Do you know of any other way to resolve this error? 2. If the ECM needs to be replaced, is there a difference between part numbers 38770-mcw-L02 and 38770-mcw-L03?
I am no help at all with your question, but I thought I'd reply to 1. welcome you to VFRWorld, and 2. to bump your thread in replies so that maybe someone who does know will see it. bienvenido a vfrworld
Just in case it helps, here's what copilot (Microsoft's AI) said: Problem: Error Code 24 indicates a faulty No. 2 O2 sensor heater. The issue often arises after installing O2 sensor eliminators (typically 330 Ohm resistors). Even after reverting to the original sensors and resetting the ECU, the FI light may persist. Troubleshooting Steps Taken: Resistance Check: Both original sensors and eliminators showed correct resistance (~330 Ohms). Connector Cleaning: Cleaned connectors (4P and 26P) with CRC MAF cleaner to ensure good contact. Wiring Check: Used posi-taps to test continuity right before the ECM—confirmed signal was reaching the ECM. ECM Suspected: Despite all checks, the FI light remained, suggesting a possible faulty ECM. Additional Notes: The error may cause the bike to run richer, as observed via autotune trim tables. Some users suggest that O2 eliminators alone may not be sufficient unless paired with a fuel management system like a Power Commander 2 .
