U0073 on TOYOTA CAMRY — Control Module Communication Bus A Off

Q: "What does U0073 mean on a TOYOTA CAMRY?"

"U0073 indicates: Control Module Communication Bus A Off. This is a network communication code. 6 TOYOTA CAMRY owners have reported this to NHTSA."

Q: "What are the most common causes of U0073 on TOYOTA CAMRY?"

"Based on 6 NHTSA reports, the most commonly cited components are: Electrical System, Electrical System,Service Brakes, Electrical System,Vehicle Speed Control,Service Brakes. These percentages are based on the component field in owner complaints."

Q: "Is U0073 serious on my TOYOTA CAMRY?"

"Of 6 NHTSA reports for this code on TOYOTA CAMRY, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my TOYOTA CAMRY shows U0073?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What U0073 Means on Your TOYOTA CAMRY

U0073 is a diagnostic trouble code indicating: Control Module Communication Bus A Off. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

6 TOYOTA CAMRY owners have reported this issue to NHTSA across model years 2007-2018. Most reports come from the 2007, 2009 model years.

Real TOYOTA CAMRY Owner Reports

Source: NHTSA Complaints Database

"I had abs, and brake lights came on. the speedometer, odometer and a/c has stopped working without reason. dealer found u0073 trouble code and i had the replace abs actuator assembly which includes abs pump and ecu."

— 2007 TOYOTA CAMRY owner · ELECTRICAL SYSTEM · Filed 03/12/2014

"Here is a problem with my toyota camry, 4-door le sedan, 2007. the indicators brake and abs on the instrument panel started lighting up occasionally after the front brake service on 07-29-14."

— 2007 TOYOTA CAMRY owner · ELECTRICAL SYSTEM,SERVICE BRAKES · Filed 07/30/2014

"The same year and model toyota camry has already had a recall for the same problem in the hybrid version for the exact same part. while driving the car the speedometer goes to zero, the tachometer needle goes up and down like crazy, the ac cuts off and the temperature sensor cuts off."

— 2007 TOYOTA CAMRY owner · ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,SERVICE BRAKES · Filed 07/18/2014

"On june 5, 2014 i was driving my 07 camry at approximately 40 mph when the abs, brake and vsc warning lights came on. it took more effort to engage the brakes in the car and i drove the car to keyes toyota. the vehicle was checked and several codes were identified."

— 2007 TOYOTA CAMRY owner · VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),SERVICE BRAKES · Filed 06/05/2014

"Re 2009 toyota camry le with 62,100 miles; assembled in either georgetown ky, lafayette or indiana: the brake actuator assembly failed, resulting in the illumination of various warning lights and the "rpms started bouncing communication code u0073," according to the dealership."

— 2009 TOYOTA CAMRY owner · VEHICLE SPEED CONTROL,SERVICE BRAKES · Filed 03/17/2015

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

4

'07

1

'09

1

'18

Common Causes on TOYOTA CAMRY

Based on NHTSA complaint component analysis for this vehicle.

ELECTRICAL SYSTEM 16.7%

ELECTRICAL SYSTEM,SERVICE BRAKES 16.7%

ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,SERVICE BRAKES 16.7%

VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),SERVICE BRAKES 16.7%

VEHICLE SPEED CONTROL,SERVICE BRAKES 16.7%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does U0073 mean on a TOYOTA CAMRY? ▾

U0073 indicates: Control Module Communication Bus A Off. This is a network communication code. 6 TOYOTA CAMRY owners have reported this to NHTSA.

What are the most common causes of U0073 on TOYOTA CAMRY? ▾

Based on 6 NHTSA reports, the most commonly cited components are: Electrical System, Electrical System,Service Brakes, Electrical System,Vehicle Speed Control,Service Brakes. These percentages are based on the component field in owner complaints.

Is U0073 serious on my TOYOTA CAMRY? ▾

Of 6 NHTSA reports for this code on TOYOTA CAMRY, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my TOYOTA CAMRY shows U0073? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.