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2007 Suzuki Xl7 O2 Sensor Location Of Bank 1 Sensor 2 On 2008 Suzuki Xl7

P0158 is an OBDII code that occurs in many vehicles, including theSuzuki XL-7. The code is triggered when:

The voltage at the O2 sensor remains above threshold for 20 seconds or more Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself

There are also some less likely problems that can cause P0158. We’ll discuss them below.

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Bank 2 is the side of the engine with the second cylinder in the firing order.

Sensor 2 is downstream of the catalytic converter.

Here’s a pretty helpful video from on diagnosing the code:

Suzuki XL-7 P0158 Symptoms

Typically, the only symptom of P0158 is going to be the check engine light. In some cases, there can be other symptoms as well. These symptoms include:

Rough running engine Smelly exhaust Service light on Poor MPG

P0158 is almost never a breakdown risk (Chrysler vehicles being the exception). 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.

Suzuki XL-7 P0158 Causes

Here are the most common issues that cause the P0158 code in the Suzuki XL-7. They are presented in order (somewhat) of most to least likely to cause the problem.

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Damage to the Terminal– The terminal that the oxygen sensor connects to (the plug) is also relatively susceptible to damage. You’ll want to make sure that there is voltage going to it. There’s more on that directly below. Wrong O2 Sensor– If you are getting P0158 after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad.

XL-7 P0158 Diagnosis

It is possible to diagnose the P0158 with a multimeter. 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 XL-7’s O2 sensor, or wiring harness that’s the issue.

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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 it ends up being a wiring issue, it’ll save you money over buying an unnecessary O2 sensor.

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’s not getting any voltage, attach the test light to the harness plug and shake the wiring a little bit. If the light comes on, even for a second, you know that you have a short circuit causing the P0158 trouble code.

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Conclusion

Good luck finding whatever caused P0158 in your Suzuki XL-7. If you have anything that you would like to add, please feel free to leave a comment below.

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