2002 Blazer 02 sensor
[size=3]I have a 2002 Blazer LS 4.3L 4wd 65k miles.....
Check engine light has been on for a 6 weeks. Disconnected battery overnight twice but does not clear. Advance Auto Parts Global OBDII scan says P0155- O2 sensor heater circuit malfunction (Bank 2 Sensor 1) Bought sensor from Advance Auto but connector was wrong (Bosch). Which sensor is bad? Please help! Tom |
RE: 2002 Blazer 02 sensor
Do yourself a favor and purchase an AC Delco sensor. Bosch sensors are JUNK!
B2S1 is the passenger side O2 sensor directly before the 'Y' in the y-pipe. |
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