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Check Engine Light On? Get Diagnostic Services at Pep Boys

What Does Your Check Engine Light Mean? Don't Worry, Our Technicians Can Help Diagnose And Fix The Problem!

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Benefits of a Pep Boys Service:

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Quality Service by Certified Technicians
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5000+ Technicians
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Easy Online Scheduling
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850+ Locations

Flashing vs. Steady Check Engine Light

A steady check engine light means your vehicle needs attention, but a flashing check engine light indicates a more serious issue that should be checked immediately. Our ASE-certified technicians at Pep Boys can diagnose the exact cause of the problem and get you back on the road fast.

Let the Pep Boys Technicians Solve Your Check Engine Light Issues

Step 1:

Free Check Engine Code Pull Service1

Features:
  • A scan of your vehicle's on board computer
  • Documentation of the diagnostic trouble code(s) (DTC) and code description(s)
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Step 2:

Engine Diagnostic Service

$110.002
Why Choose Engine Diagnostic Service?
  • 90 Day, 4,000 mile labor warranty
  • Variety of tests to effectively diagnose engine-related problem(s)

Once your vehicle's on-board computer has been scanned and the DTCs retrieved, it is time to diagnose the malfunction. Technicians at Pep Boys will walk you through what the DTC means and provide the recommendations and quality service you need.

Features:
  • Road test of vehicle to verify complaint (if running)
  • Visual inspection of engine compartment for abnormal electrical or vacuum related conditions
  • Complete battery and charging system analysis
  • Database check for any technical service bulletins issued by the vehicle manufacturer that may be related to the DTC(s)
  • One or more of the following tests:
    • Fuel pressure
    • Spark
    • Compression
    • Individual component
  • A reason for the cause of the malfunction
  • Repair estimate
  • Courtesy vehicle inspection
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1 Service is only eligible for vehicles manufactured from 1996 to present.
2 Hybrid vehicles require an additional $49.99 for vehicle preparation and labor. Service is not available for electric vehicles. Price shown includes fees (excl. taxes); checkout price may be lower where certain fees do not apply.

Common Causes of a Check Engine Light

Faulty Oxygen Sensor:

Your oxygen sensor monitors exhaust fumes and helps optimize your engine's fuel efficiency. A faulty sensor can reduce your car's performance by up to 40%. Let Pep Boys replace it with a high-quality, long-lasting sensor.

Loose Gas Cap:

A simple issue that can lead to a check engine light is a loose gas cap. Our technicians can quickly assess and fix this common problem.

Worn-Out Spark Plugs:

Spark plugs power your engine. When they wear out, they can lead to ignition problems or engine misfires. Pep Boys offers spark plug replacement services.

Battery Problems:

A weak or faulty battery can trigger your check engine light. We’ll test and replace it to keep your car’s electrical systems working properly. Need a new car battery? Purchase one at your local Pep Boys.

Catalytic Converter Issues:

If your catalytic converter isn’t working, your car could emit harmful pollutants. Let our technicians test and repair it for you.

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FREQUENTLY ASKED QUESTIONS

What causes the check engine light to come on?

The most common reason for a check engine light is a faulty oxygen sensor. Other frequent triggers include a loose gas cap, bad spark plugs, a malfunctioning catalytic converter, issues with the mass airflow sensor, or problems with the car's emissions or ignition system.

Is it okay to drive with the check engine light on?

If the check engine light is steady, driving for a short period is usually safe, but you should get it checked as soon as possible. A flashing check engine light indicates a more serious problem, and driving could cause further damage to the engine.

What does a solid check engine light mean?

A solid check engine light means there's a problem with your vehicle, but it’s not urgent. However, ignoring it can lead to bigger, more expensive issues over time. Have your car diagnosed promptly to identify the cause.

What does a flashing check engine light mean?

A flashing check engine light signals a serious issue, often related to engine misfires, that could cause damage if not addressed immediately. You should stop driving and get your vehicle inspected as soon as possible. If you need assistance, contact Pep Boys local towing service to safely transport your car to a service center.

Can low oil cause a check engine light?

Low oil levels can cause a check engine light to come on, though it's more common for the oil pressure warning light to appear. If both lights are on, have the vehicle inspected immediately to prevent engine damage. Need an oil change? Get your car serviced at your local Pep Boys.