Check engine light code P0120? - Toyota Nation Forum : Toyota Car and Truck Forums
1st Generation (1995.5–2004) 1st generation Tacoma information and discussion.

 
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#1 Old 10-13-2007, 04:04 PM
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Check engine light code P0120?

My check engine light keeps comming on and going off. I retrieved the codes and it shows it to be a P0120 TPS/Throttle pedal position sensor "A" circuit malfunction. Has anyone had this code and what was the problem. I don't want to buy a Throttle position sensor just to find out that was not the problem. Advance Auto Parts wants $80.00. Has anybody purchased one from the Toyota dealer. I would appreciate any ideas or suggestions. Thank you very much. I have a 1999 Tacoma 4X4 Reg Cab 2.7 3RZFE 62,000 miles 5 speed manual transmission. Other than the check engine light being ON (sometimes) the truck runs great.

Last edited by cblankin; 10-13-2007 at 04:57 PM. Reason: To add more information.
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#2 Old 10-13-2007, 04:19 PM
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To make it easier for people to help you, post all the pertinent information about your vehicle.

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#3 Old 10-13-2007, 04:23 PM
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first check the connector remove and check if it has corrosion and needs cleaning or has moisture in it, sometimes just removing and replacing is enough to clean the pins.

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#4 Old 10-13-2007, 06:16 PM
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I disconnected and reconnected the connector several times and the check engine light has remained OFF for several miles. I will drive it tomorrow and hopefully if will remain OFF.
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#5 Old 10-16-2007, 05:49 PM
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So far the check engine light has remained OFF. The sugestion to disconnect and reconnect the Throttle positon sensor connector several times was an excellent idea. Thanks again
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