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Ask Jeff Policky Your Own Question
Jeff Policky
Jeff Policky, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 2425
Experience:  Yamaha Gold, Suzuki Gold, Honda Bronze, Polaris Bronze, BRP
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2012 V Star 950; installed Cobra Slip On, K&N Air Filter and

Customer Question

2012 V Star 950; installed Cobra Slip On, K&N Air Filter and Cobra FI2000 O2 Fuel Management. Have been riding for several weeks with no issue and suddenly have engine light with code 24 (O2 sensor). Bike only has 6k miles (bought last year as left over floor model). Any suggestions?
JA: Have you located all of the vehicle's oxygen sensors? Are the wires leading to and from each intact and in good shape?
Customer: Appear fine
JA: What is the model of your '12 motorcycle?
Customer: V Star 950
JA: Are you fixing your bike yourself? What have you tried so far?
Customer: Removed O2 Sensor, wiped down and inspected. No visual signs of damage.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 10 months ago.
Category: Motorcycle
Expert:  RSRBOB replied 10 months ago.

Hi and thank you for your question. The way you laid out the symptoms, it sounds like all was fine for awhile then out of the blue the O2 sensor started throwing a code This is while no one had performed any service or repair the on bike. Where I am going with that question is it sounds like you had an O2 sensor on the bike the whole time, is that correct?

Customer: replied 10 months ago.
original O2 sensor left in place and Cobra Fuel Management was model for O2 Sensor. Only changes had been periodic adjustments on the fuel management trying to find the "sweet spot". No other maintenance.
Expert:  RSRBOB replied 10 months ago.

Have you removed the spark plugs to inspect them for color? Also, have you used any fuel treatments or stabilizers or any kind of through the gas tank chemicals?

Customer: replied 10 months ago.
Have not removed spark plugs yet and no fuel treatments used. Always use premium fuel, however.
Expert:  RSRBOB replied 10 months ago.

Thank you for the additional information. At this point, let's pull the spark plugs out and see what they look like. We need some more info here. It sounds like the O2 sensor may have failed, providing it is still connected, but we want to be sure.