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Codes U0100 & U0073 - 2006 Chevrolet Equinox

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What should i look for when getting engine codes u0121,u0101,u0155,u0073,u0100. plus all lights on clusters on. some times car only goes 5mph till i shut off and restart.


All these " U " codes are communication issues amongst modules. These modules communicate on bus wiring from one to another. You have a communication issue with one or more modules. You will most likely have to have the vehicle proffessionaly scanned with a vehicle scan tool to be able to identify the source of this communication issue. You may have a bad module/wiring/power/ground issue to be repaired

Nov 29, 2015 | Cars & Trucks

1 Answer

What does this codes u0073 means ?


communication failure on CAN-Bus.
take it to the shop.
as in all cases, electrical
check all fuses first.
reseat the connectors to the transmission.
FSM
Trouble Code: u0073 Control Module Communication Bus Off
Trouble Code Conditions:
TCM fails to transmit and receive the data via CAN for specified time continuously.
Possible Causes:
  • TCM
  • circuits
  • ECM

Apr 24, 2014 | 2008 Suzuki Forenza

1 Answer

Mazda 6 2005 u0101,u0155,u0121,u0073,u0100 codes coming up


I got the same problem. u ever figure it out? ive cleared codes and there the same. light on cluster lit up . plus some time after pulln away from stop car goes five mph. turn off start up drives fine. im about to burn this thing.

Apr 21, 2013 | 2005 Mazda 6

1 Answer

No start and code u0100


That means that the computer on the car is not working because it cannot communicate with the controller for the transmission.

Feb 07, 2013 | 2006 Saturn ION

1 Answer

I have a 2003 Mazda 6s. I was driving the car and turned to come uphill to my house, the car jerked like something hit the rear end. check engine and AT light come on. the car drove fine but about every...


Per the online search - see attached. Check ATF fluid via the dipstick - make sure car is on flat ground and running, transmission in PARK w/parking brake applied.
11_21_2012_11_08_20_pm.jpg

Nov 21, 2012 | Cars & Trucks

1 Answer

I have a 2005 Mazda Tribute and i have 2 error body codes...They are B1318/U0073 can you tell me what these codes mean?


B1318 Safety restraint module supply below 9volts.
U0073 Can bus communication error.
Likely causes....Dead battery / charging problems or Wirng or supply to module or module fault.

Jun 03, 2011 | Mazda Tribute Cars & Trucks

1 Answer

I had my 2004 Mazda Rx8 get an Engine Diagonistic@ Advance Auto & I got this code which I cannot decipher U0100-lost comm. with Engine control/Power Train Engine control Mod A.Could yiu please explain...


Codes that begin with the letter U are always communication fault codes between modules in a CAN system. They are basically to be ignored unless a problem is occuring. This is because all of the control modules in your car ( and there are a bunch of them ) are all communicating to each other and sending information between each other on one set of wires called a "twisted pair" Due to the high volume of infomation being sent and received there is the invevitable time when a message will be sent from one module to another and it is lost or not responded to in a timely manner (meaning in milliseconds) When this occurs then a U0100 or other comm fault code is stored.

May 05, 2011 | 2004 Mazda RX-8

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