Check out some of my other posts if you need more tips and info. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Below you will find the most complete list of Dodge trouble codes available. This sensor controls engine operation such as fuel cut. Dodge Dakota P0121 Symptoms The symptoms of P0121 are going to vary by year and model, but they certainly are going to cause noticeable changes in the way that your Dakota drives. Start by consulting the repair information for your vehicle to determine which pin on the connector is power and which is ground. Well my question is: Where is this baby located and how do you install? Spark plugs typically need to be replaced every season or 25 hours of use.
I have been tooling around all afternoon and the truck runs great so far. This type of problem is best diagnosed by the dealer or a local shop with the proper diagnostic scanning equipment. Disconnect the modules one at a time when it is acting up and see when the communication comes back. So you should chech it on our car models. P0121 Dodge Description The Throttle Position Sensor responds to the accelerator pedal movement.
We do frequently update this Generic Check Engine Light Codes list, but technology is constantly in motion. Still could be the wire though not likely. To test the ground side of the circuit, connect the red multimeter lead to the battery positive terminal and the black lead to ground. If it wasn't for this site I might have paid for several other repairs until I got it right. Nov 09, 2014 U1120 means the abs module has lost communication with speed sensors.
Thanks for stopping in, and for some great info on , and , be sure to check out our Article Index! If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left. U codes are lost communications codes from computers. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control. If not, you have a problem with the sensor power supply. It gave me code P0121 this time.
You'll need a scanner to monitor speed sensors. If problem is in module you won't get communication with scanner. It is relatively serious problem since it can leave your vehicle in failsafe mode. It is a type of variable resistor which changes its resistance value according to throttle position. Did not take it out the plastic. Good luck diagnosing P0121 in your Dodge Dakota.
Check the wire for resistance. We have also implemented a new area for posting some responses to our most , so be sure to visit these pages for some instant info on your check engine light code! Basically it is your call to have them fixed. We are adding diagnostic help daily, so look for codes that link to a help screen and check back frequently! Make sure the connector is plugged in and free of corrosion; and check for broken wires. No error codes ever showing. In this particular case both codes have to do with the Throttle Position Sensor. Idle position of the throttle valve is determined by the receiving the signal from the throttle position sensor. As the throttle is opened, the voltage reading goes up.
This allows vacuum to b. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. This is readily available at any auto parts store. Then reset the computer by disconnecting the neg. Might need new module or speed sensor Nov 20, 2013 P0300 is a Random Misfire P0302 2 Cylinder Misfire U1120 The code U1120 means, lost wheel distance message.
This sensor has a high failure rate. This allows you not only to potentially diagnose a concern yourself, but also to make informed decisions when having your car serviced by a shop. You should also check that the spark plug gap is set properly. And lets face it, if the service engine light is on then you need it now!. I let it go for a couple of years because it was just annoying and it didn't have a check engine code.