Modern vehicles are equipped with a
diagnostic system known as On-Board Diagnostics II (OBD II). This
system monitors operation and function of all engine management
systems and automatic transmission operation to insure correct emission
levels. When the system reads an error, a Diagnostic Trouble Code
(DTC) will be generated.
After pulling your DTC with either a scan tool
or onboard diagnostics, lookup the actual code definition within
ALLDATAdiy.com and follow the repair process.