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For the 2020 holiday season, returnable items shipped between October 1 and December 31 can be returned until January 31, 2021. You may be charged a restocking fee up to 50% of item's price for used or damaged returns and up to 100% for materially different item.
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Actron CP9550 PocketScan Plus

4.5 out of 5 stars 599 ratings

Price: $69.99 & FREE Shipping
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  • Reads and displays MIL (malfunction indicator light) status and I/M monitors
  • Compatible with ALL 1996 and newer vehicles (OBD-II and CAN protocol)
  • Automatically reads diagnostic trouble codes when connected for fast diagnostics
  • Reads and displays OBD-II generic diagnostic trouble codes and definitions, as well as pending codes
  • Reads and displays MIL status, I/M monitors, pending codes, freeze frame data, and VIN ID numbers
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Product description

Product Description

Actron diagnostic scanners are the fast, easy way to diagnose and turn off your vehicle's Check Engine Light. All Actron scanners are compatible with vehicles from 1996 to present. They all display emissions status as well, which can save time and money when renewing your vehicle's registration. Each Actron scanner also provides access to RepairPath.com, an online service that provides additional diagnostic and repair information.


The Actron CP9550 OBD-II PocketScan Plus is the most advanced, powerful and compact automotive diagnostic trouble code (DTCs) reader available, but DTC's and descriptions are just a start of the tasks it can handle. The CP9550 PocketScan is CAN (controller area network) compliant and provides freeze frame data, VIN info and performs the important task of (I/M) Inspection Maintenance-readiness testing by displaying the I/M readiness monitor status. Great for use before and after repairs are made, its small size makes it perfect for easy storage and use.

Advanced and Compact OBD-II Diagnostics

Since the 1980's standardized Onboard Diagnostic systems—first OBD-I and currently OBD-II—mandated for virtually all cars and light trucks have provided automotive technicians with insight into the increasingly complex inner workings of modern passenger vehicles. On the other hand, most consumers are totally unaware of these systems, with the only indication that there may be a problem with their vehicle coming to their attention when "check engine"/malfunction indicator light (MIL) is illuminated on the dashboard. Professional technicians utilize large, expensive diagnostic tools to translate the diagnostic trouble codes (DTCs) generated by the internal computer networks of in your vehicle in these events. The cost for this is passed on to you by your mechanic whether you understand the reason/mechanism or not, but entry-level do-it-yourselfers (DIY) do not have to be left in the dark.

Codes and definition on-screen. View larger.

Additional, affordable, advanced info in-hand. View larger.

With Actron's CP9550 OBD-II PocketScan Plus DIYers can instantly and inexpensively gain access to the generic OBD-II codes generated by their vehicles that indicate a vast amount of valuable diagnostic information. These generic codes can be read easily with the patented one-touch read and erase buttons both during normal use parameters of their vehicle and in the event of an MIL event, with their definitions available on-screen. Designed for ease of use, the CP9550 is CAN compliant (an important OBD-II computer protocol), utilizes a standard 16-pin OBD-II connector and features a cable permanently connected to the unit. CAN functionality allows the CP9550 to interact with the different diagnostic subsystems within your vehicle. The standard pin layout and permanent orientation of the cable ensures that you will always be able connect to your vehicle's data link connector (DLC), the OBD-II input port usually located underneath your dashboard, and the unit's rugged construction and small size mean that it can be stored and taken anywhere. In addition to code reading the Actron CP9550 also provides access to more advanced vehicle information. These include the reading and display of "freeze frame" data, which is a snapshot of the overall sensor readings from your vehicle's central computer at the time of a MIL event; access to the VIN (vehicle ID number); and the status of your vehicle's inspection and maintenance (I/M) monitors, whose proper working is pivotal to a vehicle passing state mandated emissions tests.

Standard Features:

  • Compatible with ALL 1996 and newer vehicles (OBD-II & CAN).
  • Automatically reads DTCs when connected for fast diagnostics.
  • Displays OBD-II generic code definitions.
  • Reads, displays and erases DTCs.
  • Reads and displays MIL (malfunction indicator light) status.
  • Reads and displays I/M monitors.
  • Reads and displays pending codes.
  • Reads and displays freeze frame data.
  • Reads and displays VIN (easy way to check vehicle ID number).
  • Easy to read backlit display.
  • Effortlessly powered by car battery through the 16-pin OBD-II connector.
What's in the Box?

Actron CP9550 OBD-II PocketScan Plus compact code reader tool, users manual.

Automotive Analysis Tools to Suit Every Need

With over 40 years of experience manufacturing affordable automotive diagnostic tools Actron features a product line that has something for everyone, regardless of your level of experience. Check out the table below for current models of Actron scan tools available and their available features. Click the model number at the top of the table for further details.

Actron diagnostic tool product comparision chart CP9125 CP9550 CP9575 CP9580A CP9185 CP9190
About Actron, an SPX Brand

A business unit of SPX Service Solutions, Actron has a 40-year tradition as a leading manufacturer of cost-effective, high-performance automotive diagnostic and test equipment. SPX Service Solutions designs, manufactures and markets a fully integrated family of global brands providing specialty service tools, advanced diagnostic and shop equipment, inspection and gauging systems, training and technical information for vehicle servicing and maintenance.

From the manufacturer

Customer Questions & Answers

Customer reviews

4.5 out of 5 stars
4.5 out of 5
599 global ratings
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Top reviews from the United States

Reviewed in the United States on November 21, 2016
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3 people found this helpful
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Reviewed in the United States on December 22, 2015
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2 people found this helpful
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Reviewed in the United States on October 25, 2015
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3 people found this helpful
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Reviewed in the United States on March 13, 2011
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128 people found this helpful
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Reviewed in the United States on October 3, 2016
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Top reviews from other countries

Andrei Magearu
5.0 out of 5 stars a must have
Reviewed in Canada on August 18, 2015
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One person found this helpful
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4.0 out of 5 stars Four Stars
Reviewed in Canada on February 15, 2018
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Amazon Customer
5.0 out of 5 stars Nice unit
Reviewed in Canada on February 20, 2018
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Amazon Customer
5.0 out of 5 stars Five Stars
Reviewed in Canada on February 20, 2018
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Ian Stacey
5.0 out of 5 stars proven to be a useful diagnostic tool in my budget range
Reviewed in Canada on November 9, 2014
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