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Old 05-11-2010, 02:53 PM   #1
Scooby Newbie
Member#: 163033
Join Date: Oct 2007
Chapter/Region: MAIC
Location: Virginia
2006 Subaru WRX
Metallic Gray, OBP

Default p0031/HO2S

I bought an 06 wrx (like the one I totaled) from someone who pro tuned it with cobb accessport. The engine light and cruise light is on, so I read the codes and this came up...

Heater Control Circuit Low (Bank 1 Sensor 1) Is there any way I can fix the cel/cel's without messing up the tune?

P.S. I know the poo31 is the o2 sensor, the exhaust is catless...so I could do the cel fix on that but I don't know if it'll mess up the tune... :/ ?
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Old 05-12-2010, 07:00 PM   #2
Cobb Tuning
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX

That is for the front o2 sensor. It needs to be replaced. If your tuner tuned the car with a faulty O2 sensor in place it COULD alter the tune, however, I would think this might have come up after the tune.

COBB Tuning
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Old 05-12-2010, 10:20 PM   #3
Scooby Newbie
Member#: 238969
Join Date: Feb 2010
Chapter/Region: MAIC
Location: Chesapeake, VA
2002 Twin Turbo WRX
2004 FXTi


That's a completely new symptom, the only light it ever had before was the Secondary Air Injection System crap that I showed you before. Replace the o2 sensor and it should be fine.
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