0 like 0 dislike
205 views
by
iam getting error p0031 02s heater circuit - Low B1 S1)
Vehicle: 2004 hyundai getz 1.4

1 Answer

0 like 0 dislike
by (13.5k points)
Hi there

This is the sensor in the exhaust manifold or top of the catalytic converter. Most often the sensor itself is the cause of the problem. Sometimes it is a wiring issue, but for the most part it's the sensor. Take a look at the wiring harness and make sure there isn't any damage or spots that might have rubbed through the insulation.

Related questions

0 like 0 dislike
1 answer 314 views
2 like 0 dislike
1 answer 11.5k views
0 like 0 dislike
1 answer 397 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...