What is the difference between ODB code reader and ODB scanner?

JUSTINGSS

MEMBER
2006 AUDI 100

What is the difference between odb code reader and odb scanner? I have read some saying that for a code reader the engine light needs to be on but for it to work. I have read some saying that for a code reader the engine light needs to be on but for scanners does not.

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

My definition between the two, A code reader just reads the code and a scantool gives you live data on parameters and actuators

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Tuesday, May 8th, 2012 AT 10:28 AM

ANGELASA

MEMBER
2 POSTS

A code reader is just that it reads codes a scanner will read codes and will read readyness status of monitors. A code reader just pulls codes. A scanner pulls codes, stores freeze frame data and you can view live sensor data. The engine light may not be on but there may still be a codes stored in the computer. The code reader can still be used to check for codes that don't turn the light on. In a word it is Same as scons and scones if you ask me