![]() ![]() You can also use a voltage test light to determine whether or not the oxygen sensor is getting any voltage at all (they’re about $5 at Walmart). If it ends up being a wiring issue, it’ll save you money over buying an unnecessary O2 sensor. If you don’t have access to a multimeter, it certainly wouldn’t hurt to check the wiring to between the fuse box and the Oxygen sensor first. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec, this can help you determine if it’s your Liberty’s O2 sensor, or wiring harness that’s the issue. It is possible to diagnose the P0132 with a multimeter. Here is a fantastic video that covers all aspects of diagnosing the P0132 code: ![]() Wrong O2 Sensor– If you are getting P0132 after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad.You’ll want to make sure that there is voltage going to it. Damage to the Terminal– The terminal that the oxygen sensor connects to (the plug) is also relatively susceptible to damage.The downstream sensor is especially susceptible to this problem Here’s how to find a short in the wiring harness (Youtube). This is due to the fact that O2 sensors are under the chassis where they are subject to punishment from road debris, and they are subjected to a lot of exhaust heat. Wiring Harness Issues– The wiring that goes to the front and rear oxygen sensors is very susceptible to damage.They are relatively affordable at Autozone or Amazon. Although it is a temptation to replace it right away, it wouldn’t hurt to check out the wiring harness around it beforehand. Bad Oxygen Sensor– The O2 sensor itself is one of the most likely reasons that P0132 is triggering your service engine soon light.They are presented in order (somewhat) of most to least likely to cause the problem. Here are the most common issues that cause the P0132 code in the Jeep Liberty. A poor air fuel mixture going through the catalytic converter But, like anything that causes the service engine soon light to come on it is a good idea to have it fixed as soon as possible. Most of the time, it’s not a breakdown risk. In some cases, there can be other symptoms as well. Typically, the only symptom of P0132 is going to be the service engine soon light. When the Liberty has low O2 sensor voltage at B1S1, it’ll trigger P0131. There are also some less likely problems that can cause P0132. The air fuel sensor stays in rich biased mode for too long.The voltage at the sensor remains above threshold for 20 seconds or more.P0132 is a common OBDII code that occurs in many vehicles, including the Jeep Liberty. ![]()
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