Mechanics

TRUCK CHECK ENGINE LIGHT ON CAN NOT FIND CODES MEANING?

1989 Toyota Pickup • 155,000 miles

The engine is a 22R/carb no one knows what the code is. Code that is given is 31.
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Modestov
August 29, 2011.



How was this code retrieved, does it have an OBD connection?

Mhpautos
Aug 30, 2011.
It means "Open or short signal in vacuum switches signal VSW1, VSW2, VSW3" These are EGR solenoids.

Wrenchtech
Aug 30, 2011.