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OBDII code question V70-XC70 1998

posted by  someone claiming to be bl on  Thu Nov 10 18:16 CST 2005 [RELATED]



It's a common one. Most common causes are (1) the front (bank 1) O2 sensor is starting to fail (2) vacuum leak(s) (3) the ECT sensor (coolant temperature sensor) has failed making the ECU engine computer "think" the engine is stone cold all the time. These are fairly common and should be eliminated before moving into the more complex stuff.

bl






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