U01A6 - Understanding DTC U01A6 - Common in 2015-2018 Chevrolet Silverado

Quick Answer

U01A6 means: U01A6 indicates a communication error in the vehicle's network, often linked to the propulsion control module.

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

Can I drive with U01A6? Seek immediate diagnosis and repair to avoid potential safety issues.

Common Questions

What does U01A6 mean and how does it affect my car?

DTC U01A6 indicates a communication failure within your vehicle's network, specifically linked to the propulsion control module. If ignored, it can result in severe performance issues like reduced power, erratic acceleration, or even safety hazards while driving.

What are the most common causes of U01A6 and how much does it cost to fix?

Common causes include faulty wiring, module malfunctions, and corrosion at connectors. Repair costs can range from $150 for wiring repairs to over $1,200 for module replacements, depending on the severity of the issue.

Can I drive my car with U01A6 or should I stop immediately?

It's advisable to stop driving immediately if you see this code. Continuing to drive can lead to further damage and potentially unsafe driving conditions.

How can I diagnose U01A6 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for diagnostic trouble codes, view freeze frame data to understand when the fault occurred, and even clear codes after repairs to verify success.

What vehicles are most commonly affected by U01A6?

Commonly affected vehicles include the 2015-2018 Chevrolet Silverado and GMC Sierra. Drivers of these models frequently report this code, especially after experiencing electrical issues.

How can I prevent U01A6 from happening again?

Regular maintenance such as inspecting wiring and connections, keeping the vehicle's software updated, and ensuring that all components are in good working condition can help prevent the recurrence of this code.

What is U01A6?

The diagnostic trouble code (DTC) U01A6 indicates a communication issue within the vehicle's network, particularly related to the propulsion control module. This code is often seen in various models, especially in 2015-2018 Chevrolet Silverado and GMC Sierra vehicles. In simple terms, it means that the vehicle’s computer systems are unable to communicate effectively. This can lead to various operational issues such as reduced engine performance, issues with starting, or even complete power loss in severe cases. The problem can arise from faulty wiring, poor connections, or defective modules. The implications of ignoring this code can be significant, including potential safety risks while driving. If you see this code, it’s crucial to address it promptly to ensure your vehicle remains safe and reliable. Drivers might notice symptoms like the check engine light illuminating, erratic engine behavior, or difficulty in engaging gears. Understanding the nature of this issue is important for maintaining your vehicle's performance and safety on the road.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U01A6 is present:

Check engine light stays on constantly, indicating a persistent issue that requires immediate attention.
Engine hesitates during acceleration, which can manifest as a lack of power or stuttering, especially during highway driving.
Fuel economy decreased by 10-15%, which could mean that the engine is not functioning efficiently due to communication errors.
Difficulty engaging gears, particularly in automatic vehicles, which can lead to unsafe driving conditions.
Unusual noises from the engine or transmission may occur, indicating deeper issues that could be exacerbated by this code.

Possible Causes

Most common causes of U01A6 (ordered by frequency):

Faulty wiring or loose connections are the most common cause, with a likelihood of about 50%. Damaged wiring can disrupt communication between modules.
A malfunctioning propulsion control module can also trigger this code, with a 30% chance. It's essential to have this module checked as it can affect engine performance.
Corrosion at connectors or damaged pins, which can be prevented by regular inspections and cleaning, accounts for about 10% of cases.
Less common but serious, a complete failure of the vehicle's network system can lead to multiple DTCs and is critical to address immediately.
Rarely, software glitches or updates required in the vehicle's control modules can trigger U01A6, often remedied by a software reset or reprogramming.

U01A6 Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repairing or replacing damaged wiring or connectors.

Total: $150 - $400
Success rate: 85%

Module Replacement

Replacing a faulty propulsion control module.

Total: $500 - $1,200
Success rate: 90%

Software Update

Performing a software update or reset for the vehicle's modules.

Total: $100 - $250
Success rate: 70%

Money-Saving Tips for U01A6

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 U01A6 Diagnosis Process

Follow these systematic steps to accurately diagnose U01A6. 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). Look under the hood and around the battery for any visible issues.