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U 1120 service code - 300 Chrysler Cars & Trucks

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This is something to do with your anti lock brakes. I found this information at a Dodge specific message board:

"that is a network code from the manufacturer. the "U" tells me it is a network code, and the "1" after it tells me it is a manufacturer specific code.

U1120-Lost wheel distance message
Set condition: the PCM doesn't receive a vehicle speed signal from the anti-lock brake module over the CAN C bus.

Possible causes:
CAN C bus circuit open or shorted
Anti-lock brake module
PCM"

Looks like you will need to take this to the dealership for diagnostics.

Posted on Aug 25, 2010

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Hyndai h1 codes p0335 p1131 p0180 p1123 p1120 p0121 p1127 p0110


Wow do You have a bunch of different Sensor and Circuit Problems

0110 Intake Air Temp Circ Malfunction
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Learn more about codes here http://www.troublecodes.net/OBD2/Pcodes/

I would guess with all this You may Have a Connection Problem or a Computer Issue Get the codes reset and monitor as soon as check engine light comes on to see what codes com up first and what codes are pending
Good Luck Rickie

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HOW ARE THE BRAKES WORKING FOR YOU THIS MAY BE A ANTI-LOCK BRAKE PROBLEM HOW HEAVY WAS THE BOAT YOU WERE TOWING, & DID YOU HAVE ANY PROBLEMS STOPPING WHILE YOU WERE TOWING THE BOAT?

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I have a 2000 focus with a p1120 code what can I do to start this repair.


Diagnostic Trouble Code (DTC) P1120 indicates that the Throttle Position Sensor (TPS) closed throttle position is below the range of 3.4 percent (0.17 volts). Possible causes for this DTC are:

· Damaged wiring harness or connectors

· Open or shorted Reference Voltage (VREF) circuit

· Faulty TPS

· Faulty Powertrain Control Module (PCM)

The methods/steps for diagnosing this code depend on how the code was stored and retrieved.

This code can be a Key On Engine Off (KOEO), Key On Engine Running (KOER), or a Continuous Memory code. To properly diagnose the cause of the problem a scanner must be obtained that has the ability to read each of these as well as the capability of reading live engine data from the PCM.

Direct voltage readings should be taken at the TPS connector and compared to the live data at the PCM. This will eliminate the possibility of a faulty PCM. The VREF and Signal Return circuits must be verified between the TPS and the PCM. Also the Sensor Ground circuit must be verified between the TPS connector and battery ground.

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This morning I looked while I was driving and my engine light, seat belt light, abs light etc was all on while I was driving. Once I stopped and turned the vehicle off, I restarted it and only the engine...


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Why would you go to Auto Zone and come away without knowing what the code was?
For $50.00, you can get the least expensive code reader.

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THIS CODE DOESN'T MEAN THE TPS IS THE PROBLEM, ALTHOUGH THE SWITCH MANY TIMES IS, THE CODE MEANS THAT THE CIRCUIT HAS A PROBLEM, THIS CAN BE THE ACTUAL SWITCH OR THE CIONNECTOR TO THE SWITCH OR THE WIRING TO THE SWITCH AND ALSO THE COMPUTER, IT TAKES A SCANNER WITH LIVE DATA FUNCTION TO LOOK AT THE SIGNAL AND DECIDE WHERE THE PROBLEM IS.

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