Help! DC5R Check Engine Light codes!

**DC5.Raven** · 15-09-2011 11:10 AM

I turned the ignition on my DC5R and I got the check engine light yesterday morning.

Got an OBD2 code reader today and the following codes came up:

41-01 HO2S (B2 S1) Heater Failure
41-04 HO2S S1 Heater Failure

I think it has to do with one of the O2 sensors, just not sure which one.

Can anyone help?

Thanks!

**TypeS** · 15-09-2011 02:58 PM

What I found in my holy bible;

HO2S= Heated Oxygen Sensor, sensor used to measure the amount of oxygen in the exhaust, which is used to adjust the air/fuel mixture in the engine.

B2= Bank 2, this is a location identifier, the engine has 2 banks, 1 and 2. Bank 1 refers to the bank nearest cylinder #1.
S1= Sensor 1, all engines have an oxygen sensor before and after the catalytic converter, S1 refers to the sensor before the CAT, S2 is after the Cat. Conv.

Translation:

Your primary 02 sensor's heating element has failed. You will have to replace the complete sensor.