|
OBD-II scanners
Every OBD-II error code is a warning that something could be very wrong inside your car. It can tell the difference between a broken gas cap and a more expensive fuel pump or oxygen sensor problem, but you have to pay attention to what it is telling you. The only way to tell is to plug in a scanner and see what's up.
Keep in mind that OBD-II is a standard in only the broadest sense, and some carmakers use proprietary codes and keep their meaning secret. Although it can't compare with the dealer's more sophisticated device, there's a lot you can do with a $100 auto scanner or kit that uses a notebook or a PDA. The bottom line is that an OBD-II scanner is essential equipment for today's shade-tree mechanic.
Editor's rating:  6.5
The good: The Actron PocketScan Code Reader is small and lightweight. Its interface is easy to use, and the company includes solid diagnostic information on its Web site.
The bad: The cord on the PocketScan Code Reader is too short to extend to the engine bay, and the device reads a limited number of power train codes.
The bottom line: The Actron PocketScan Code Reader works fine for very basic OBD-II scanning and is extremely easy to handle, but its code-reading limitations make it useful for diagnosing only simple engine problems.
Editor's rating:  7.0
The good: AutoTap for Palm features multiple ways to display data, can clear car error codes, and comes with a long cord that can reach from cabin to engine.
The bad: This scanner doesn't have a Pocket PC version and is limited to power train codes.
The bottom line: AutoTap for Palm is very practical in its form factor and with its long cord, but the fact that it shows only power train codes may limit its usefulness.
Editor's rating: 7.3
The good: The Palmer Performance PCMScan provides a flexible way to display OBD-II info and works great for recording problems for later analysis.
The bad: The hardware requires an RS232 serial connection, something that's not too common in modern laptops, and it suffers from poor documentation.
The bottom line: Once you overcome the setup hurdles, the Palmer Performance PCMScan gives great flexibility in displaying running car data from an OBD-II port, although it requires a laptop.
Editor's rating: 7.5
The good: The CarChip E/X with Alarm is very easy to use, seamlessly collecting data on engine performance. Its small form factor won't interfere with vehicle operation.
The bad: The CarChip E/X with Alarm can monitor only eight power train parameters at a time, and four of those can't be changed. It can't distinguish between different cars in which it is used.
The bottom line: The CarChip E/X with Alarm offers basic OBD-II scanning for home mechanics, and its alarm feature lets the kids know when they are driving unsafely.
More car tech resources from CNET
|
Trade in and Save $50 with HP
Send us feedback
E-mail to a friend
Unlocked phones
Back to intro
