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Troubleshooting code p2112 on toyota tacoma - Cars & Trucks

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SOURCE: toyota trouble code P2112

A trouble code of P2112 has to do with the electronic throttle control system (ETCS). Unlike vehicle in the past, your gas pedal does not have a cable that goes to the throttle body to open and close your throttle plate or the thing that makes your idle go up and down to make your vehicle go faster or slower. Your vehicle works with sensors and motors in order to go faster or slower. In other words in simple terms you have a sensor at the gas pedal which is supposed to send a signal to the vehicles computer (ECM). Then the ECM sends a signal to a motor as well as another sensor to tell the throtle to go faster or slower. It's a litle technical but that's a simple way of putting it. Toyota's will go into a "fail safe" mode when it detects a problem. The fail safe mode basically makes the computer set the idle at a certain point so the vehicle can at least be moved slowly and that's all it will do until the problem is corrected. You didn't mention your engine size so I'm not able to really give you anything to check but if you're not real mechanically inclinded you may want to take it to a reputable repair shop. There are MANY tests to do to narrow down the source of the problem but in most cases that I have seen it was some sort of a binding in the throttle body. I know this answer didn't really give you and answer as far as how to fix it but I hope I have been able to help you understand why you have this code and why the vehicle isn't moving hardly which I'm guessing is the case....

Posted on Sep 11, 2012

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The deceleration sensor for your 2004 Toyota Tacoma is located under the passenger seat.

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I have 3 codes from my scaner p2111 p2112 p2238

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For the P2111 & P2112 you will need to replace the throttle body this can be pricey since the TAC is built into it. Try cleaning it good and see what happens. This can also trigger the P2238 code if its dumping fuel.
For the P2238 check the connections on the o2 sensor or replace the upstream o2 sensor that should correct it.

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Your vehicle has whats called a OBDII diagnostics setup. Just google "2001 Toyota Tacoma, OBDII trouble codes". You should get a whole page full of responses. (Type in exactly what is in exclamation marks above) Once you have codes, scroll down to PO450. Remember, whatever sensor/circuit it refers to, means there is a problem with the circuit, the sensor, ie..wiring, bad connector, bad ground, short, open, and so on. Dont just change out part without first examining the wiring and connectors first. Common sense goes a long way with this sort of troubleshooting.


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