Top 10 OBDII Codes Quick Quiz

You must drive the car twice for a failure
PCM must see the failure twice to turn on the service light
On the second start up the code will set

It’s a smaller code number and failures happen in order of the code number
There are more failures on a P0171 than P0174

P0174 is for a “V” engine
Both “There are more failures on a P0171 than P0174″ and “P0174 is for a ‘V’ engine”

This test actuates all the sensors and controls on the engine
Is only used to verify repair
This test is for finding out if the engine can perform a code test.

Drive vehicle for more than 5 miles at 65 mph.
Before drive testing, clear codes without shutting off the key before leaving the service bay.
Both