so a few days ago i replaced my belts and belt tensioner. everything went well except for the check engine light i recieved afterwords. i finally got the time to pull the code and came up with this...
code: P0031 heater control circut low B1 S1
what i can gather as of now, is that its the upstream O2 sensor... is it just a coinsidence that it hapened RIGHT after i replaced my belts? r is thee something else i should look into?
if it helps its a 2002 wrx