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Check Engine light on? A scanner or other diagnostic tool can indicate the trouble code(s), which will quickly point you in the right direction. At Advance, we have hundreds of diagnostic tools, including Bluetooth-compatible scanners for wireless connectivity.
The advent of computerized engine controls in the 80s meant the Check Engine light (CEL) on the dash alerted drivers to potential problems. An illuminated CEL means that a sensor or a system on the engine has registered a reading that's out of normal operating spec, and the engine computer has stored a trouble code.
When the CEL is illuminated, a technician can attach a code reader tool to the vehicle's diagnostic port and read the trouble codes stored in the computer. This makes troubleshooting a lot easier than it was in the old days, when a mechanic might have to rely on educated guesses and intuition to nail down a problem. Shop with us to find scanners and code readers that can help you quickly troubleshoot a problem. Our selection ranges from basic code reader devices for your 90s car all the way to Bluetooth-enabled scanners for your state-of-the-art late-model car.

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Diagnostic Test Connector
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Carquest Premium Diagnostic Test Connector

Part # PTA1326
No Reviews
limited lifetime replacement
Does Not Fit 

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Not Available For This Item

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Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

GM Bumper Retainer
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Dorman GM Bumper Retainer

Part # 961-364D
No Reviews
limited lifetime replacement
Does Not Fit 

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

CarScan Code Scanner: Live Data, Battery/Charging System Test, Free Fix and Part Recommendations
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Innova CarScan Code Scanner: Live Data, Battery/Charging System Test, Free Fix and Part Recommendations

Part # 5210
(22 reviews)
1 yr replacement if defective

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

CarScan Code Scanner: All-System Network Scan, Maintenance Reset, Free Fix and Part Recommendations
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Innova CarScan Code Scanner: All-System Network Scan, Maintenance Reset, Free Fix and Part Recommendations

Part # 5410
Excluded from discounts
(25 reviews)
1 yr replacement if defective

How Would You Like To Get This Item?

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

CarScan Code Scanner: Read & Clear Check Engine Light, ABS Codes, Free Fix and Part Recommendations
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Innova CarScan Code Scanner: Read & Clear Check Engine Light, ABS Codes, Free Fix and Part Recommendations

Part # 5110
Excluded from discounts
(96 reviews)
1 yr replacement if defective

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

CarScan Code Scanner: Bidirectional & Active Test, Special Resets, Free Fix and Part Recommendations
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Innova CarScan Code Scanner: Bidirectional & Active Test, Special Resets, Free Fix and Part Recommendations

Part # 5610
Excluded from discounts
(66 reviews)
1 yr replacement if defective

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Store Pickup

Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

CarScan Code Scanner: EPB Reset & ABS Bleeding, Transmission Temp, Free Fix and Part Recommendations
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Innova CarScan Code Scanner: EPB Reset & ABS Bleeding, Transmission Temp, Free Fix and Part Recommendations

Part # 5510
(14 reviews)
1 yr replacement if defective

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Store Pickup

Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

MaxiCHECK MX808
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Autel MaxiCHECK MX808

Part # MX808
No Reviews
contact manufacturer for warranty

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Not Available For This Item

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Not Available For This Item

Home Delivery

Not available for this item

MaxiSYS ULTRA Advanced Diagnostic Tablet
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Autel MaxiSYS ULTRA Advanced Diagnostic Tablet

Part # MSULTRA
No Reviews
contact manufacturer for warranty

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Not Available For This Item

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Not Available For This Item

Home Delivery

Not available for this item

TS508KMV-1 Kit: TS508 Tool, (8) 1-Sensors, 1 MVK
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Autel TS508KMV-1 Kit: TS508 Tool, (8) 1-Sensors, 1 MVK

Part # TS508KMV-1
(1 review)

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Not Available For This Item

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Not available for this item

CarScan Code Scanner: Read & Clear Check Engine Light, SMOG Check, Free Fix and Part Recommendations
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Innova CarScan Code Scanner: Read & Clear Check Engine Light, SMOG Check, Free Fix and Part Recommendations

Part # 5010
(1 review)
1 yr replacement if defective

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Not Available For This Item

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Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

Auto-Ranging Digital Multimeter: Built-in Lead Holders, ETL/CE Listed, Auto Shutoff
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Innova Auto-Ranging Digital Multimeter: Built-in Lead Holders, ETL/CE Listed, Auto Shutoff

Part # 3300
(28 reviews)
1 yr replacement if defective

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

MaxiTPMS TS608
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Autel MaxiTPMS TS608

Part # TS608
No Reviews

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Not Available For This Item

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Not Available For This Item

Home Delivery

Not available for this item

CarScan Code Scanner: Free App With No Subscription, Scan CEL/ABS/SRS/Network, Maintenance Reset
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Innova CarScan Code Scanner: Free App With No Subscription, Scan CEL/ABS/SRS/Network, Maintenance Reset

Part # 1000
Excluded from discounts
(186 reviews)
1 yr replacement if defective

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

Carburetor Fuel Pressure & Vaccum Tester: Multiple Adapters, Large 3.5" Dial Face, Vacuum & Pressure
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Innova Carburetor Fuel Pressure & Vaccum Tester: Multiple Adapters, Large 3.5" Dial Face, Vacuum & Pressure

Part # 3620
No Reviews
1 yr replacement if defective

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

Financial ToolMulti
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Nite Ize Financial ToolMulti

Part # FMT2-11-R7
(80 reviews)
30 day replacement if defective

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Not Available For This Item

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Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

Circuit Tester - Electrical
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Dorman Circuit Tester - Electrical

Part # 86592
No Reviews
limited lifetime replacement

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Not Available For This Item

Same Day Home Delivery

Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

Digital Timing Light: Dual Readout Digital Display, Slim Rotating Barrel, Built-in Hand Guard
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Innova Digital Timing Light: Dual Readout Digital Display, Slim Rotating Barrel, Built-in Hand Guard

Part # 3568
No Reviews
1 yr replacement if defective

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Not Available For This Item

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Not Available For This Item

Home Delivery - Free over $35

Standard Delivery Available

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