Ok I don't know where all of these are coming from but my 99 frc just lit up the check engine codes like a Christmas tree . Maybe it is one part that is tripping most of them...I some what doubt it but I need some help.

I pulled all the codes with the DIC and ran them through corvettedoctors and got this:


(BCM)
P0137 - H02S circuit low (history code)
P0138 - H02S circuit high (history)
P0141 - H02S heater performance (history and current)

Now what does this mean, is there a heater control valve that is acting up? Do vettes have that sort of thing? Of coarse here in Texas I have a long time before I will need to use the heater but I think these are the ones that are tripping the check engine light and I will be needing an inspection soon.


(HVAC)
B0361 - HVAC actuator feedback (history and current)
B0441 - HVAC actuator out of range (history)

These I assume are from one of the blend/temp door actuators gone bad. I'm pretty sure it's the one that controls the driver's side temp. When I set the auto temp to 67ish the driver's side blows warm and the pass side is still cold, but at 60* they are both frigid...the question is where exactly is the actuator and how much of the dash do I have to destroy to get to it?


(RFA)
C2110 - can't find info on this one
C2015 - same deal ???
U1096/1064/1016 I gather are from no comunication with the keyless entry module, is this correct? The car has an aftermarket alarm. I am not too worried about these unless I am wrong about the cause.


Any help or links to other sites like corvettedoctors that may have some more info would be greatly appreciated.


Nate

 

The C2110 is the RR TPM sensor malf dtc. Tire pressure sensor; this could be due to either a failed sensor or a sensor battery going bad. I couldn't find 2015, but C2105 is the RF TPM sensor, adn the C2115 is the LR tpm.

As for the HO2S heater issues, it is the Heated Oxygen Sensor... there is NO heater valve. Heat is applied to the O2 sensor to allow it to work.

The P0141: The PCM supplies a bias voltage to the sensor signal high and low ckt. Basically, if it takes too long for the O2 sensor to come up to operating range, it sets the DTC. "The time it takes the HO2S to reach operating temperature is based on the amount of air that flows into the engine"
HTH

 

Thank you very much for the insight!

It makes much more sense that it is the Heated 02 Sensor (h02s) than my guess. That's why it is tripping the CE light...duh should of figured that one out . Now I have no cats on the car but it is tuned for that and have never before tripped this code. These are the after cat ones I suppose, should I just replace both the sensors and how do I know which one(s)? Or clear the code hoping it was a fluke and just drive the car.

Thanks again