OBD-II Code P3473 – Cylinder 10 Deactivation/Intake Valve Control Circuit/Open: An Explanation and Repair Guide
OBD-II codes are a series of diagnostic codes that are stored in a car’s onboard computer system (OBD) whenever a problem is detected in a vehicle’s engines or other components. These codes are generic, meaning that they can be used across multiple car manufacturers and models. In this article, we are going to discuss OBD-II code P3473, which refers to the Cylinder 10 deactivation/intake valve control circuit/open.
For most people, cars may be a mystery. When your vehicle’s check engine light illuminates, many people start to panic, have no clue what to do except take it to a mechanic. While it’s essential to have a professional take a closer look at your vehicle, understanding what the problem might be based on the diagnostic trouble code can save you both time and money. Therefore, this article seeks to explain everything you need to know about OBD-II code P3473, including what it means, its symptoms, causes, and how to repair the issue.
Section 1: Understanding OBD-II Code P3473 – What is Cylinder 10 Deactivation/Intake Valve Control Circuit/Open?
When your vehicle’s OBD-II diagnostic system detects a problem with the Cylinder 10 Deactivation/Intake Valve Control Circuit/Open, it means that the electronic control module (ECM) has detected an issue with the cylinder deactivation system that engages and disengages the engine’s cylinders.
The cylinder deactivation system is designed to boost your vehicle’s fuel economy by deactivating a few cylinders when they are not needed. This means that when your vehicle is cruising, the engine will shut down one or more cylinders, reducing fuel consumption. Once more power is required, the deactivated cylinders re-engage without noticeable contractions or vibrations.
Notably, Cylinder 10 Deactivation/Intake Valve Control Circuit/Open refers to the intake valve responsible for allowing air into the intake manifold. The intake manifold is important because it works together with other components of the engine system such as the throttle body to control the flow of fuel and air into the cylinders. When the intake valve fails, the cylinder’s air intake is affected, leading to poor engine performance and fuel economy.
Section 2: Symptoms of OBD-II Code P3473 – How to Tell When Your Vehicle Has a Problem
When OBD-II code P3473 is triggered, your check engine light will illuminate as an indication that there’s a problem with the engine. While the engine control module (ECM) is responsible for shutting down one or more cylinders when not needed, a malfunctioning system may lead to several issues that are easily noticeable by the driver. These symptoms include:
1. Engine misfires – A cylinder not operating correctly or shutting down when needed leads to an unbalanced engine, leading to shaking or vibrating when idle.
2. Poor engine performance – A malfunctioning Cylinder 10 deactivation/intake valve control circuit will cause fuel economy issues, leading to decreased performance.
3. Reduced fuel economy – Poor fuel economy is a sign of an inefficient engine.
4. Stalling or rough idling – A deactivating cylinder will cause irregular engine rotation or idle while driving, causing the car to stall and even stop without warning.
Section 3: Causes of OBD-II Code P3473 – What Causes Cylinder 10 Deactivation/Intake Valve Control Circuit/Open?
Several factors may cause Cylinder 10 Deactivation/Intake Valve Control Circuit/Open. These include:
1. Faulty cylinder deactivation solenoid – The solenoid is responsible for controlling the movement of oil, which in turn helps in the deactivation of the engine’s cylinder. A defective cylinder deactivation solenoid can cause air intake issues, thus disrupting the engine’s system hence producing P3473 code.
2. Damaged wiring – Any issues with the wiring that connects the cylinder deactivation system to the engine control module can cause communication issues between the two systems. Damage to the wiring can cause an open circuit making it impossible for the ECM to communicate, leading to engine malfunction and reduced performance.
3. Failed Intake Valve – Intake valves that are malfunctioning can cause the engine’s air intake system to act up, leading to poor fuel economy and decreased engine performance.
Section 4: How to Repair the P3473 Code – Fixing Cylinder 10 Deactivation/Intake Valve Control Circuit/Open
Repairing the P3473 code can be an easy or challenging task, depending on the underlying cause of the problem. Here are some of the possible solutions for fixing Cylinder 10 Deactivation/Intake Valve Control Circuit/Open:
1. Replacing the faulty deactivation solenoid- A faulty cylinder deactivation solenoid should be repaired or replaced. This will help ensure that the intake valves open and close for optimal engine performance.
2. Assessing and repairing wiring damage – If the cause of the P3473 code is damaged wiring, then the wiring should be assessed and repairs made if necessary.
3. Replacing the intake valve – When the intake valve is damaged, replacing it will restore the air intake process, ensuring optimal engine performance, and fuel economy.
FAQ Section
Q1. Why does my vehicle’s check engine light illuminate?
A1. Your vehicle’s check engine light may illuminate due to several issues. The On-Board Diagnostic system is responsible for overseeing your car’s engine system and reporting any problems detected to its computer system.
Q2. Can I drive my vehicle when the Check Engine Light is on?
A2. Yes, you can drive your car when the Check Engine light is on. However, it’s essential to identify and fix the problem as soon as possible to avoid further damage.
Q3. How much does it cost to fix OBD-II code P3473?
A3. The cost of repairing the P3473 code varies based on the underlying cause of the problem. The typical repair cost may range from a hundred to several hundred dollars.
Q4. How long will it take to fix OBD-II code P3473?
A4. Repairing the P3473 code may take a couple of hours depending on the extent of the damage and the complexity of the repair required.
Q5. How do I reset the Check Engine Light once the P3473 code has been fixed?
A5. You can reset the Check Engine Light using an OBD-II scanner that clears the code and turns off the warning light on your car’s dashboard.