U0459 - Invalid Data Received from Vehicle Control Module - Common in 2015-2018 Chevrolet, GMC, and Cadillac Vehicles

Quick Answer

U0459 means: U0459 indicates invalid data received from a vehicle control module, often due to communication issues.

Fix: Check and replace faulty components Cost: $150 - $400 Time: 90-180 minutes

Can I drive with U0459? Immediate attention is recommended to avoid potential engine performance issues.

Common Questions

What does U0459 mean and how does it affect my car?

The U0459 code signifies that there's invalid data being received from one of your vehicle's control modules. This can lead to various performance issues, such as poor engine response, erratic shifting, or decreased fuel efficiency. It's crucial to address this issue promptly to avoid further damage to your vehicle.

What are the most common causes of U0459 and how much does it cost to fix?

Common causes of U0459 include faulty communication between control modules, damaged wiring, and software glitches. Repair costs can range from $150 for wiring repairs to $1200 for module replacements, depending on the issue.

Can I drive my car with U0459 or should I stop immediately?

While you may be able to drive, it's advisable to stop and diagnose the issue as U0459 can lead to significant performance problems. Continuing to drive could exacerbate the issue and potentially lead to more expensive repairs.

How can I diagnose U0459 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for DTCs, review freeze frame data to pinpoint when the issue occurs, and monitor live data from the control modules to identify discrepancies in communication.

What vehicles are most commonly affected by U0459?

U0459 is commonly seen in vehicles like the 2015-2018 Chevrolet Silverado, GMC Sierra, and Cadillac Escalade, among others, particularly those equipped with advanced electronic systems.

How can I prevent U0459 from happening again?

Regular maintenance, including checking electrical connections and ensuring software updates are performed, can help prevent U0459. Additionally, inspecting wiring for wear and tear can mitigate future issues.

What is U0459?

The U0459 diagnostic trouble code (DTC) indicates that there is invalid data received from a vehicle control module, often related to the communication between the various electronic control units (ECUs) in your vehicle. This code typically arises when the control module detects an inconsistency or invalid information being relayed by another module, like the engine control module (ECM) or the transmission control module (TCM). For example, in many 2015-2018 Chevrolet Silverado and GMC Sierra models, this could occur if there is a fault in the wiring harness connecting the modules or if one of the modules is malfunctioning. The implications of this code can range from minor inconveniences, such as the check engine light illuminating, to more severe issues like engine performance degradation or erratic shifting in automatic transmissions. Ignoring this code can lead to further complications in your vehicle's performance and reliability, making it crucial for car owners to address it promptly. The overall communication system of the vehicle is vital for ensuring that all components work harmoniously; therefore, diagnosing and resolving U0459 is essential for maintaining vehicle health.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0459 is present:

  • Check engine light stays on constantly, which is one of the most immediate signs indicating a problem.
  • Engine hesitates during acceleration, causing a frustrating driving experience and potential safety risks.
  • Fuel economy decreased by 10-15%, which can lead to increased fuel expenses over time.
  • Transmission shifts may feel erratic, affecting overall vehicle drivability and comfort.
  • Intermittent electrical issues, such as dashboard lights flickering or other components malfunctioning unexpectedly.

Possible Causes

Most common causes of U0459 (ordered by frequency):

  1. Faulty vehicle control module communication (50% likelihood) - This is the most prevalent cause, where one or more modules are not transmitting valid data due to internal faults.
  2. Damaged wiring or connectors (30% likelihood) - Frayed wires or poor connections can interrupt data signals between modules, causing invalid readings.
  3. Software glitches or outdated firmware (10% likelihood) - Sometimes, a simple software update can resolve issues related to data communication.
  4. Less common but serious cause: Corrosion in connections or terminals - This can significantly impede communication and may require extensive repairs.
  5. Rare but possible cause: Physical damage to the module from an accident or environmental factors, which can lead to failures in data transmission.

U0459 Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repairing or replacing damaged wiring or connectors that affect communication between control modules.

  • Total: $150 - $400
  • Success rate: 75%
Control Module Replacement

Replacing a faulty vehicle control module that is not communicating correctly.

  • Total: $600 - $1200
  • Success rate: 90%
Software Update

Updating the software of the control modules to resolve communication issues.

  • Total: $100 - $200
  • Success rate: 60%
Money-Saving Tips for U0459
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional U0459 Diagnosis Process

Follow these systematic steps to accurately diagnose U0459. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the communication lines (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the communication lines (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no reoccurrence of the code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no reoccurrence of the code (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: U0459 Diagnosis and Repair on 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado 1500, 50,000 miles

Problem: Customer reported check engine light and intermittent transmission shifting issues.

Diagnosis: Upon scanning with the GeekOBD APP, U0459 was found along with additional codes. A visual inspection revealed frayed wiring harness.

Solution: Repaired the frayed wiring and updated control module software.

Cost: $400 (including parts and labor)

Result: Check engine light cleared, and the vehicle shifted smoothly after the repair.

Case Study 2: Resolving U0459 on 2017 GMC Sierra

Vehicle: 2017 GMC Sierra 2500HD, 30,000 miles

Problem: Owner experienced poor engine performance and check engine light.

Diagnosis: Diagnostic scan revealed U0459. Further investigation showed a faulty engine control module.

Solution: Replaced the engine control module and reprogrammed it.

Cost: $1,000 (including module and labor)

Result: Engine performance restored to normal, and no further issues were reported.

Diagnose U0459

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: U0459
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes