Driver's Edge

SEPTEMBER 4, 2024

This means that some drivers will require an emissions test to ensure that each vehicle's emissions components are up to standards. Here are a few common reasons why a vehicle may fail its inspection: Check Engine Light A check engine light is an automatic failure for a Texas car inspection.

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Tomorrow's Technician

MAY 13, 2024

This standardized many of the onboard emissions protocols and codes and allowed states to perform onboard emissions testing. As time passed, even large trucks and motorcycles adopted this same method to test the emissions status of a vehicle. Most engine control modules store only one freeze frame record per code.

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RepairSmith

FEBRUARY 26, 2025

Exhaust and Emissions System Issues Some owners have reported check-engine lights related to O2 sensors, EGR components, or evaporative emissions leaks. Occasionally, a misfiring cylinder could also trigger emission-related codes. Early detection often prevents more extensive damage.

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RepairSmith

OCTOBER 19, 2023

While a check engine light, or CEL, can mean a lot of different things, from a bad fuel cap to a failed ignition system, it’s a serious issue and should be remedied as soon as possible. Here in Los Angeles these CELs and trouble codes can result in a failed emissions test, preventing you from registering your vehicle.

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Tire Review Magazine

OCTOBER 2, 2023

When a customer has a vehicle with a check engine light glowing, and the OBD-II reader shows a P0420 or related (P0421, P0430, P0431) code, it’s probably because there’s an issue with the catalytic converter efficiency. Regular use helps keep the emissions system clean and prevents recurring check engine lights.

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RepairSmith

NOVEMBER 11, 2024

This can cause your vehicle to fail an emissions test. So, it’s best to swap it out when you spot the red flags of a bad purge valve.

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Mechanic Engineering Check Engine Light Electricity 52

RepairSmith

OCTOBER 28, 2024

Signs You Need a Fuel Tank Pressure Sensor Replacement Watch out for these telltale symptoms that your fuel tank pressure sensor might be failing: Illuminated check engine light : Your check engine light activating is often one of the first signs of a failing fuel tank pressure sensor.

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AutoSuccess

OCTOBER 25, 2023

When a customer has a vehicle with a check engine light glowing, and the OBD II reader shows a P0420 or related (P0421, P0430, P0431) code, it’s probably because there’s an issue with the catalytic converter efficiency. It’s also effective after failing an emissions test. Rislone offers a money-back guarantee.

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RepairSmith

MARCH 12, 2025

A blocked diesel particulate filter leads to increased emissions that can cause vehicle owners to fail an emissions test. Beyond the legalities, a clogged DPF reduces the efficiency of the exhaust system, compelling your engine to overexert itself. Is It Worth Replacing a Clogged DPF ? Absolutely!

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IT Engineering Check Engine Light Auto Repair 52

Tomorrow's Technician

OCTOBER 20, 2023

Some misfire complaints are a flashing check engine light, and a P0300 to P0312 diagnostic trouble code (DTC) indicates that one or more cylinders are misfiring. Unfortunately, a misfire also will cause a considerable increase in hydrocarbon (HC) emissions, which can cause a vehicle to fail an emissions test.

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Engineering Check Engine Light Emissions Testing Mechanic 130

RepairSmith

JANUARY 21, 2024

The loss of fuel vapor also affects your car’s fuel efficiency , resulting in reduced mileage and increased emissions. This could cause your vehicle to fail an emissions test and damage your catalytic converter , resulting in costly repairs and hefty fines. But how do you identify an EVAP leak? Let’s find out.

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RepairSmith

MARCH 28, 2024

This throws off the air-fuel ratio, resulting in rough idle , reduced fuel economy (often accompanied by the check engine light), and difficulty starting your vehicle. An active check engine light : The ECU monitors the amount of released fuel vapor and triggers the check engine light if it’s deficient or excessive.

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Tomorrow's Technician

NOVEMBER 21, 2023

Some misfire complaints are a flashing check engine light, and a P0300 to P0312 diagnostic trouble code (DTC) indicates that one or more cylinders are misfiring. Unfortunately, a misfire also will cause a considerable increase in hydrocarbon (HC) emissions, which can cause a vehicle to fail an emissions test.

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Girls Auto Clinic

JULY 25, 2022

You can bring in your car as many times as it needs, plus we added the following required services to keep your vehicle running in tip-top shape: rear wipers, cabin air filters, wheel alignments, tire repairs, and check engine light scans! We added more value for our VID Members!

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Oil Change Auto Repair Check Engine Light Emissions Testing 130

RepairSmith

OCTOBER 21, 2024

Yes , replacing a bad knock sensor is definitely worth it, especially if you’re noticing symptoms like a knocking sound, poor fuel efficiency, or that dreaded check engine light. Ignoring the problem can lead to significant engine damage, which is far more expensive to repair than a simple sensor replacement.

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RepairSmith

APRIL 25, 2024

An Illuminated Check Engine Light It’s almost impossible to physically detect an EVAP leak. So when the leak detection pump in the exhaust system suspects a small EVAP leak event, it immediately turns the Check Engine Light on. You may also notice a fuel smell from the engine due to the leaking gas vapors.

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RepairSmith

JULY 17, 2024

This information is crucial because it helps the ECU adjust the fuel-to-air ratio and engine timing based on current driving conditions. Common symptoms of the P2227 code include: Check Engine Light : The most obvious sign. When this light comes on, it’s a clear indicator that something is wrong.

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RepairSmith

SEPTEMBER 27, 2023

Blinking or Illuminated Check Engine Light A continuously illuminated or flashing Check Engine Light (CEL) is an early indicator of a failed oxygen sensor. However, the Check Engine Light can signal other problems, too. When this occurs, your vehicle is likely to fail the emissions test.

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RepairSmith

JANUARY 15, 2024

Active Check Engine Light Even though the check engine light doesn’t directly mean that your crankshaft position sensor is faulty, it indicates something is amiss. A crankshaft sensor detects the position and speed of your engine’s crankshaft. How Can I Prevent Crankshaft Sensor Malfunctions?

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Mechanics Direct

SEPTEMBER 23, 2024

Signs of a Bad EGR Valve Check Engine Light: The check light is one of the most popular signs that show that the EGR valve is faulty. Although this warning light may come on for many other reasons, one of the most frequent is EGR valve problems.

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RepairSmith

JULY 17, 2024

Primary Symptom: Illuminated Check Engine Light The most common and immediate symptom you’ll notice is the Check Engine Light turning on. This light appears on your dashboard when the PCM detects an issue with the downstream oxygen sensor’s voltage.

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RepairSmith

JANUARY 29, 2024

If the camshaft position sensor in your car malfunctions, it can disrupt the vehicle’s fuel injection and ignition timing by sending inaccurate or delayed signals to the Engine Control Unit (ECU). Note: The check engine light can also illuminate due to a bad crankshaft position sensor or other faulty components.

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RepairSmith

JANUARY 9, 2024

Check for these bad O2 sensor symptoms. Lit check engine light (CEL): A faulty O2 sensor is one of the most common reasons behind an illuminated CEL. This lit warning light may be because the bad sensor (upstream sensor) relays inaccurate readings to the Powertrain Control Module or shows a low oxygen level.

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RepairSmith

NOVEMBER 13, 2024

Lit check engine light: A malfunctioning throttle body often triggers the check engine light , letting you know there’s an issue with airflow. Emissions issues: A bad throttle body can disrupt the air-fuel balance, leading to your car emitting black smoke from the exhaust and causing more pollution.

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RepairSmith

SEPTEMBER 24, 2024

Illuminated check engine light : A faulty fuel pressure regulator will cause an imbalance in the engine’s air-fuel ratio, affecting combustion. This can hurt the vehicle’s performance, triggering the check engine light. This can overload the catalytic converter and increase harmful emissions.

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RepairSmith

AUGUST 27, 2024

That’s because louder noises usually suggest a leak closer to the engine, while quieter ones may point to a leak further along the exhaust system. Note: An exhaust system leak can also reduce fuel efficiency and trigger the check engine light. When it’s loose, improperly sealed, or missing, the vapors can leak out.

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RepairSmith

JANUARY 15, 2024

Starting Issues Since a failing fuel pump won’t send enough fuel to the engine, you’ll face difficulties starting your car. Lit Check Engine Light A bad pump will cause an air-fuel mixture imbalance, which will trigger the Check Engine Light. But how can you confirm fuel pump failure? Let’s find out.

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RepairSmith

FEBRUARY 25, 2024

Reduced fuel efficiency : When there’s not enough air, the engine will compensate for this by using more fuel. Lit check engine light : Multiple sensors can trigger the check engine light when you have a dirty air filter. What Causes a Bad Engine Air Filter?

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RepairSmith

JULY 17, 2024

Symptoms of a P0158 code appearing in a vehicle: Several signs can indicate a P0158 code: Check Engine Light : This is the most obvious sign. Rough Idle : The engine might run unevenly. Failed Emissions Test : High emissions levels can result from this issue.

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Banking Engineering Check Engine Light Emissions Testing 52

RepairSmith

FEBRUARY 22, 2024

Lit Check Engine Light You may see an activated check engine light if the exhaust leak throws off the oxygen sensor readings. It’s also bad for the environment, and you could fail an emissions test. This may result in your vehicle running rich or lean. But wait, it gets worse!

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RepairSmith

SEPTEMBER 28, 2023

This imbalance hinders the engine’s ability to achieve proper combustion, making it challenging to start the car. Failed Emissions Test Incomplete combustion can result in higher levels of unburned hydrocarbons and carbon monoxide in the exhaust. These increased pollutants can lead to a failed emissions test.

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Engineering Emissions Testing Mechanic Electricity 52

RepairSmith

OCTOBER 8, 2024

EGR valves typically last up to 100,000 miles or 10 years , whichever comes first.

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Girls Auto Clinic

SEPTEMBER 8, 2022

When something is wrong with these parts, computers, or sensors, the check engine light will come on, and sometimes your car will run and sound different. For the emission test, we hook up your vehicle to a machine that reads the Powertrain Control Module (PCM) or the main computer to your car.

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RepairSmith

NOVEMBER 18, 2024

An unchecked exhaust leak can make your vehicle fail an emissions test , resulting in hefty fines and trouble with car registration renewal. What’s more?

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