1989 Toyota Pickup Repair Question

Topics covered: Engine.
Mileage: 155,000 miles.

Asked on August 29, 2011

Truck check engine light on can not find codes meaning?

The engine is a 22R/carb no one knows what the code is.Code that is given is 31.

Asked by modestov

Replied on August 30, 2011

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

Answered by mhpautos (expert)
26,898 answers provided

Replied on August 30, 2011

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

Answered by Wrenchtech (expert)
14,733 answers provided