Performing regular maintenance on your Acura MDX’s emission system will ensure the vehicle runs properly and that you comply with legal emissions requirements.
A Check Emission System Acura MDX dashboard light may come up for a variety of reasons, such as a loose gas cap or something more serious, like a failing catalytic converter.
This will help to address these issues and more, helping with everything from checking the emission system to resetting it and giving you a turn by turn account of what you need to do to keep your Acura MDX emission system running smoothly.
This guide below can help you to check emission system Acura MDX and ensure it runs according to regulations, and keep your ride in prime shape.
Article Summary
Check Emission System Acura MDX Dashboard Light Mean
The emission system in your Acura MDX reduces gases and toxins produced by the engine. The exhaust system includes the oxygen sensor, catalytic converter, exhaust manifold sensors, and control modules.
If any of those parts don’t work, the emission system warning light will appear on your dashboard.
How To Fix Check Emission System on Acura MDX Dashboard
Tools You’ll Need:
- OBD-II Scanner: This tool reads diagnostic trouble codes (DTCs) from your vehicle’s computer.
- Basic Tool Kit: Screwdrivers, wrenches, and pliers for any necessary adjustments or part replacements.
- Gloves and Safety Glasses: These are for your safety while working on the vehicle.
1. Visual Inspection
Check the Exhaust System: Look for damage, rust, holes, or leaks in the exhaust pipes or catalytic converter.
Check the Connections: Make sure connections are secure, and there are no leaks in any part of the exhaust system.
2. Read Diagnostic Trouble Codes (DTCs)
Connect the OBD-II Scanner: OBD-II scanner by hooking up an OBD-II Scanner to the MDX. The OBD-II port is likely to be under your dashboard to the driver’s side of your MDX the exact location is in your owner’s manual.
Turn on the ignition: Don’t start the engine; just turn the key to the ‘on’ position.
Retrive the Codes: Use the scan tool to read the stored codes. Note any codes involving the emission system.
3. Interpreting the Codes
Consult the Manual: Look up your vehicle’s trouble code in the owner’s manual or an online database that provides meaning for diagnostic codes. The most frequent CODES (between P0100 and P0499) pertaining to the emission system include P0420: Catalyst system efficiency below threshold P0440: evaporative emission control system malfunction.
Pinpoint the Problem: DTC code are like an emergency transmission that alerts us of the likely source of the problem, whether it’s a faulty oxygen sensor (P0133), issues with the catalytic converter (P0420), or problems in the evaporative emission control system (P0455), to name a few.
4. Addressing the Issues
Replace the Oxygen Sensor: Codes about having a faulty oxygen sensor and the necessity of replacing it (where is the oxygen sensor? It can be found on the exhaust manifold).
Catalytic Converter: The cat converter was storing unburnt diesel, which caused a Type Approval Failure. Obviously, this one needs a good cleaning or a replacement. This one’s a little more complicated than last time. I might have to take it in to get it checked out. For a more accurate analysis, I’ll have to look inside the cat converter.
Evaporative Emission Control System: (Value: 0) Inspect for any loose or damaged hoses in the evaporative system. If any malfunctioning components are discovered, replace or tighten them.
5. Clearing The Codes:
Codes Are Clearing: Now that you’ve repaired the faults, plug in your OBD-II scanner for the last time to remove the trouble codes from your car’s computer.
Test drive your MDX: Drive your MDX for a short distance to make sure the emission system warning light does not return.
How To Reset Check Emission System in Acura MDX
If your check engine light is on on the dashboard of your Acura MDX and you have fixed the associated problem with the engine system, you can reset the light as follows:
Use an OBD-II Scanner
Plug in the Scanner: Locate the OBD-II port under the dashboard on the driver’s side and connect your OBD-II scanner.
Turn the Ignition: Turn the key on without starting the engine.
Read Codes: Using the scanner, read the diagnostic trouble codes (DTCs) just like the instructions said. Fix everything. The codes are essentially the scanner’s simplified explanation of the problem.
Press the Clear Codes Button: The way to do this varies. Some cars have a ‘check engine’ light on the instrument panel, while newer ones have a button (or a menu) on a multifunction display that lets you cycle through various messages and erase them.
Newer car models may have a built in touchscreen for making changes to their features and settings. Make corrections, but be cautious: reprogramming a car’s systems requires specific knowledge and experience.
If you’re not sure how to reprogram your onboard computer, visit an auto parts store to purchase a check engine light resetter.
Disconnect the Battery
Turn off the Engine: Ensure the car is off.
Unplug the Negative Terminal: Use a wrench to remove the negative battery terminal, then wait 10 to15 minutes with it disconnected.
Connect Battery: Reconnect the negative terminal of the battery. This may reset the ECM (engine computer) and clear the check engine light.
Drive Cycle
Drive Normally: If this has been fixed, driving a few miles could reset the light.
Monitor: Ensure the light does not come back on, indicating the problem is fixed.
If the light persists, further diagnosis or professional assistance may be required.
Maintenance Tips for Acura MDX
Regular Inspections: Inspect emission control system components for wear or damage.
Scheduled Maintenance: Follow your Acura MDX’s maintenance schedule for regular tune ups and emissions checks.
Quality Fuel: High quality fuel is essential to avoid the common issue of carbon buildup on engines and emission component parts.
FAQs On Check Emission System Acura MDX
What Causes the Emission System Warning Light To Come On in Acura MDX?
When the emissions light comes on, it can be the result of a bad oxygen sensor, a failing catalytic converter, a loose or damaged gas cap, or an evaporative emission problem you can’t know for certain without an OBD-II scanner to access the diagnostic trouble codes (DTCs).
Can I Drive If the Emission System Warning Light is On?
Well, you can certainly lift your foot from the accelerator. But do you really want to drive with it turning on? After all, the emission system warning light on you means that you’re producing more pollution and driving in a less fuel efficient manner overall. It could also be damaging your engine without your knowledge, suggesting you should have it checked before you put more miles on the clock.
How Often Should I Check the Emission System?
Keep your emission system in good repair. Check your emission system when your car has its regularly scheduled maintenance (between 30,000 and 50,000 miles) and immediately if the emission system warning light comes on, or if pep talk you have a problem like reduced engine performance.
Can I Check and Fix the Emission System Issues Myself?
Some emissions system problems, such as a loose gas cap or replacing an oxygen sensor, can be fairly easy for you to diagnose and fix yourself if you have the right tools and knowledge. Others, notably failure of the catalytic converter and repair of detailed problems in the evaporative emission control system, might be beyond the scope of your expertise and equipment and require professional diagnosis and repair.
What Are the Tools Needed To Check Emission System Warning Light?
To check the emission system, you’ll need:
OBD-II Scanner: To read and interpret diagnostic trouble codes.
Hand-held Tool Kit: For fixing or changing any part, you might need a screwdriver, wrench, or pair of pliers.
Safety Gear: Gloves and safety glasses to protect yourself while working on the vehicle.
Conclusion
Routine checks and maintenance of your Acura MDX emission system keep it running in tip-top condition and contribute less to your carbon footprint.
Now that you know where all the major parts of the system are and how they work, here’s everything you need to know about how to perform routine checks and maintenance, as well as diagnose and repair common issues with the emission system on the Acura MDX.
