AutoCodes – Generic – U0446

U0446 Code - Invalid Data Received From Body Control Module 'E'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Body Control Module (BCM) 'E', Body Control Module 'E' harness is open or shorted, Body Control Module 'E' circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U0446 indicates Invalid Data Received From Body Control Module 'E'.
Common causes: Common causes include Faulty Body Control Module (BCM) 'E', Body Control Module 'E' harness is open or shorted, Body Control Module 'E' circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,097

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 11, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0446 Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Body Control Module (BCM) 'E' causing its integrity to be questioned.

OBDII Code U0446 - Invalid Data Received From Body Control Module 'E' - AutoCodes.com — U0446 Code - Invalid Data Received From Body Control Module 'E'

What does this mean?

What are the Possible Causes of the DTC U0446?

Faulty Body Control Module (BCM) 'E'
Body Control Module 'E' harness is open or shorted
Body Control Module 'E' circuit poor electrical connection

How to Fix the DTC U0446?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0446 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0446 Code

1. What are the common symptoms of OBDII code U0446?

The common symptoms of OBDII code U0446 include issues with power windows, door locks, interior lights, and other body control module functions.

2. What are the possible causes of OBDII code U0446?

Possible causes of OBDII code U0446 include faulty wiring, a malfunctioning body control module, or a communication error between the body control module and the vehicle's main computer.

3. How can I diagnose OBDII code U0446?

Diagnosing OBDII code U0446 typically involves using a diagnostic scanner to read the code and identify the specific issue with the body control module or related wiring.

4. Can OBDII code U0446 be fixed by resetting the vehicle's computer?

Resetting the vehicle's computer may temporarily clear the code, but it is not a permanent solution for OBDII code U0446. It is important to diagnose and repair the underlying issue to prevent the code from returning.

5. What are some repair tips for addressing OBDII code U0446?

Repair tips for OBDII code U0446 may include checking and repairing any damaged wiring, testing the body control module for proper functioning, and ensuring there are no communication errors between modules.

6. Is it safe to continue driving with OBDII code U0446 present?

While OBDII code U0446 may not directly affect the drivability of the vehicle, it is important to address the issue promptly to prevent potential further damage to the body control module or other electrical components.

7. Can a DIY enthusiast repair OBDII code U0446 at home?

Depending on the cause of OBDII code U0446, some DIY enthusiasts may be able to address the issue at home by following repair guides or consulting with experts for assistance.

8. How much does it typically cost to repair OBDII code U0446 at a mechanic or dealership?

The cost to repair OBDII code U0446 can vary depending on the underlying issue, the labor rates of the mechanic or dealership, and the cost of any replacement parts needed for the repair.

9. Will OBDII code U0446 cause my vehicle to fail an emissions test?

OBDII code U0446 may not directly cause a vehicle to fail an emissions test, but it is still important to address the issue to ensure the vehicle is in proper working condition and meets emission standards.

10. Can OBDII code U0446 be a recurring issue even after it has been repaired?

OBDII code U0446 can be a recurring issue if the underlying cause is not properly diagnosed and repaired. It is crucial to address the root problem to prevent the code from reappearing.