GusC@AK
Active Member
You could remove it and have it bench-tested by a Volvo specialist. Or, try to find a good unit to borrow, plug it in and try to start the engine.Is there any way of diagnosing whether it's a failing hcu while it's in the intermittent stage without waiting for it to fail permanently?
There was some moisture in the connector block that provides power to the EVC system.