Find out what the light means
A check engine light means your vehicle has stored a fault code. NavGPS reads it, tells you what it means in plain words, and clears it once you have dealt with it.
Before you start
- An OBDLink MX+ connected, with the ignition on
Steps
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Open trouble codes
Engine tab → the ••• menu → Vehicles → Trouble Codes & Reset. -
Read what's stored
Stored and pending codes are listed with their descriptions, so you are not searching a five-character code by hand. -
Fix the cause
Clearing a code does not repair anything. It will come back if the fault is still there. -
Clear when you're done
Clearing also resets readiness monitors, which can matter if you have an emissions test coming — drive a full cycle before testing.
Worth knowing
- It reads both the codes already stored and the pending ones a vehicle sets before the light comes on.