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P0102 chevy silverado8/18/2023 ![]() ![]() If you feel there is anything that you could do to improve or add to this article, please leave a comment below. Most of the time, it’ll be the O2 sensor or the wiring to it. There are a lot of issues that can cause P0134 in the Chevy Silverado. By giving the engine’s computer the wrong info about how warm it is, it can throw the feedback loop of between the it and the sensor. Coolant Temp Sensor– A bad coolant temperature sensor will cause P0134.Often, when an intake leaks, it’ll affect the vehicles ability to idle properly. Intake Leak– If there is a leak in the intake manifold, it can cause the P0134.You should be able to listen and find it. ![]() Exhaust Leak– An exhaust will can cause P0134.Replacing it without testing the wiring going to/from it first is a gamble that will often pay off, but it’s still a good idea to check your harness connections and inspect it first. Bad O2 Sensor– The oxygen sensor itself can go bad.Also check to make sure that the wiring is not frayed or shorted. Make sure that the pins look good and that the harness is seating well and not cracked. You’ll want to visually inspect the harness where it plugs into the O2 sensor. Wiring– Most of the time, Bank 1 Sensor 1 is not going to be very difficult to get to.Here is a list of common potential causes for P0134 in general: There are a lot of different things that can cause P0134 to be thrown in the Silverado. Increased exhaust smell, black color from tail pipe.Most of the time, the only symptom of P0134 is going to be the service engine soon light. This video is extremely helpful in going about how to test P0134: If it doesn’t (or does so too slowly) the P0134 code will be thrown. As the engine warms up, this voltage is supposed to change. The PCM supplies a voltage or roughly 450mv to the O2 sensor. Sensor 1 will be the first sensor in the line. If it’s an inline engine (almost all 4 cylinder motors), you don’t need to worry about which side it’s on, since there’s only one exhaust manifold. Look up which side of the engine bank 1 is on That means that different model years and engine can have Bank 1on a different side. Bank 1 is the side of the engine that has the first piston in the firing order. But if the EVAP purge solenoid is stuck open (when it should be closed), then youll see one or more of the following problems: Rough idle. When there is no signal from this oxygen sensor, the engine will not be able to run at optimal efficiency, and you’ll get that annoying check engine light. If the P0443 is being caused by a EVAP purge solenoid thats stuck closed, then itll only cause the check engine light to illuminate and cause your Chevrolet Silverado (GMC Sierra) to fail an emissions test. It uses this data to tune the engine on the fly. The Silverado’s computer uses the oxygen sensor to measure the amount of O2 gases in the exhaust. P0134: O2 Sensor → No Activity Detected →Bank 1 Sensor 1 It means that the PCM/ECM is not detecting any activity from the sensor. If youre experiencing a P0102 error code on your Chevy Silverado, it may be related to the MAF sensor circuit. It’s generic, which means that it has the same meaning for any vehicle with OBDII. P0134 is a relatively common OBDII trouble code. ![]()
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