Driving to work today, my car threw a CEL. After pulling it and resetting it, it keeps coming back so I think its legit. I have a 100K warranty on my car, and the dealer did replace my diff once even with the supercharger. Is this sensor something that I can expect to be covered under warranty? Anyone know how much this sensor runs? Will it hurt my car to drive with this CEL on?

View / Vehicle Trouble Log / Record Problem 1
Overview
Time : 7/15/2004 8:08 PM
Vehicle : Ozy's S2000
CarChip : Ozy's CarChip
Trouble Code : P0141
Description : O2 Sensor Heater Circuit (Bank 1, Sensor 2)
Comments :
Voltage: 0.12V

Engine Status
Fuel Pressure (Gage) :
Intake Manifold Pressure (Absolute) : 4.6 psi
Engine Coolant Temperature : 143.6

 

It's pretty common for 02 heaters to fail. think of the heater in the 02 like the filament of a light bulb. Sometimes they burn out. There is a possibiltiy the convertor is breaking up and took out the 02.

It's easy to check, the 2 black wires on the rear 02 should have 12.5-15ohms of resistance. Most likely the heater is open.

I would expect it to be covered under the hondacare warranty.

 

I had the same problem HECASH had, but without the supercharged system. My CAT failed and melted the O2 sensor. Both were replaced under the Honda Emissions Warranty which remains valid through 80k miles.

In fact, my front O2 sensor, before the cat, just went bad last Sunday at 101k miles, which is 1k over my extended warranty.

 

Does anyone know if its OK to drive with this issue? What is the side effect of a bad rear O2?

 

You can drive normally. The rear 02 sensors sole purpose is for catalyst monitoring.