ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Find Your OBD2 Code Fast

Type the code from your scanner to get causes, symptoms, and fixes.

Code C05D6

Quick reference

C05D6 at a glance

Plain-language meaning
This code means there's a problem with the computer that helps control the car's power steering. It's like when a video game console isn't working right and makes your game lag or freeze.
Urgency
High – Steering issues can lead to loss of vehicle control, so immediate attention is necessary.
Difficulty
Moderate
System
Control Module Performance Issue
Tools mentioned
OBD-II scanner, Multimeter, Screwdriver set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the computer that helps control the car's power steering. It's like when a video game console isn't working right and makes your game lag or freeze.

Explanation

The power steering control module is responsible for managing the power steering system's operations. This code indicates that the module's processor is not performing as expected.

Technical description

The C05D6 code is triggered when the power steering control module's processor fails to perform within the specified parameters set by the manufacturer. This can be due to a malfunction within the processor itself or issues with the data it receives.

Symptoms

• Stiff or difficult steering

• Power steering warning light on the dashboard

• Intermittent power steering assistance

Common Causes

• Faulty power steering control module

• Software glitch or corruption

• Electrical issues such as poor connections or damaged wiring

Glossary

Power Steering: A system that helps drivers steer by using some source of power to assist in turning the wheels.

Control Module: An electronic device that controls a specific function in a vehicle.

Diagnosis steps

• Use an OBD-II scanner to confirm the C05D6 code.

• Inspect the wiring and connections to the power steering control module.

• Check for any software updates or recalls related to the power steering system.

Repair procedures

• Replace the power steering control module if faulty.

• Repair or replace damaged wiring or connectors.

• Update the software of the power steering control module.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$300 - $800

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Malibu

• Buick LaCrosse

• GMC Acadia

Preventive measures

• Regularly check power steering fluid levels.

• Ensure all software updates are applied.

• Inspect electrical connections periodically.

Error code type

Control Module Performance Issue

User experience recommendations

• If steering becomes difficult, pull over safely and have the vehicle towed.

• Avoid driving the vehicle until the issue is resolved to prevent accidents.

Warranty information

Check with your vehicle manufacturer as power steering components may be covered under warranty.

Historical data

This code has been more prevalent in vehicles with electronic power steering systems introduced in the early 2000s.

Urgency level

High – Steering issues can lead to loss of vehicle control, so immediate attention is necessary.

Testing conditions

• Vehicle ignition in the 'On' position.

• Power steering system engaged.

Component location

The power steering control module is typically located under the dashboard or near the steering column.

FAQs

Q: Can I drive with a C05D6 code?
A: It's not recommended to drive with this code as it can affect your ability to steer safely.

Q: How do I reset the power steering control module?
A: Disconnect the battery for a few minutes, then reconnect it. However, this may not fix the underlying issue.

Optional diagnostic gear

Tools that may help diagnose C05D6

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Chassis and ABS faults usually need a scanner that can read brake-system data directly.

View on Amazon
EPAuto 1/2" Torque Wrench diagnostic tool illustration

Universal · Torque wrench

EPAuto 1/2" Torque Wrench

Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.

Useful when wheel, hub, or suspension hardware needs correct reassembly torque.

View on Amazon
MaxxHaul Vehicle Ramps diagnostic tool illustration

Universal · Drive-on ramps

MaxxHaul Vehicle Ramps

Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.

Helpful for safer access during underbody inspection work.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
🌙