Miscellaneous 

What is trouble code U0073?

Leia Doyle

What is trouble code U0073?

When there’s a communication problem, the system will store a ‘U’ diagnostic trouble code (DTC). Code U0073 means one or more modules is not able to communicate properly over CAN bus ‘A’. Depending on the manufacturer, bus ‘A’ can refer to either the CAN High or CAN Low bus. Need help with diagnosing your trouble code?

What is control module communication bus off?

Diagnostic trouble code (DTC) U0073 stands for “Control Module Communication Bus “A” Off.” OBD code U0073 is a communication system DTC that applies to most vehicles. Usually, this code is triggered when communication is lost intermittently or fully between your vehicle’s control modules.

What does lost communication with body control module mean?

On some vehicles, the BCM acts as a gateway module, enabling communication between the CAN High and CAN Low buses. It may also perform other duties, such as acting as an interface to the anti-theft system and climate control. Code U0140 indicates the BCM is not receiving or transmitting messages on the CAN bus.

How do I fix my u0100 code?

After all, we don’t want to do that unless it’s absolutely necessary.

  1. First, Check Your Battery. This may sound obvious, but check your voltage before you look at anything else.
  2. Check For ECM and TIPM/BCM Trouble Codes.
  3. Check the Wiring Harness.
  4. Check the CAN C Bus Connection.
  5. Check the PCM.

What causes code U0100?

Code U0100 is typically caused by one of the following: A faulty PCM. A problem with the control module circuit. A problem with the CAN bus.

How do you reset Transmission Control Module?

Steps to Resetting Transmission Control Module

  1. Step 1: Turning Key Position.
  2. Step 2: Press gas pedal.
  3. Step 3: Keep Waiting.
  4. Step 4: Turning the Key Off.
  5. Step 5: Releasing Gas Pedal.
  6. Step 6: Wait Again.
  7. Step 7: Ready.
  8. Identification.

Where is the trouble code for u0073 control module?

U0073 – Control module – data bus Off Trouble Code Fault Location U0073 Control module – data bus Off

How much does it cost to diagnose a u0073 code?

The cost to diagnose the U0073 code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

What does the u0073 code for CAN bus mean?

The U0073 code doesn’t apply to all newer vehicles. It mostly applies to vehicles equipped with the faster network referred to as the CAN bus, of which there are different speeds. CAN bus speeds are determined by the importance of the information the CAN bus is expected to deliver.

What are the symptoms of an OBD code u0073?

U0073 symptoms 1 An illuminated check engine light 2 A secondary code specifying a failed module 3 Performance problems ranging from a no-start condition to inoperative HVAC system, depending on which module (s) are unable to communicate