U0073 - Control Module Communication Bus A Off

2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION U0073 - Control Module Communication Bus A Off
WARNING: This page is about a different variant/trim than selected.
U0073 - CONTROL MODULE COMMUNICATION BUS A OFF

Description:  The traction battery control module (TBCM) continuously monitors the controller area network (CAN) for messages from the powertrain control module (PCM), transaxle control module (TCM) and antilock braking system (ABS) module.
This DTC is set when the message received from the PCM, TCM or ABS is out of expected range or contains invalid data.
Possible Causes: 
  • Damaged CAN communication bus circuit
Diagnostic Aids:  See the diagnostic aids for DTC U0001.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   Refer to MODULE COMMUNICATIONS NETWORK .
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.