Did the ole' turn key three times just to see what comes up and I got a P1685. Did a search and came up with nothing and it's not on the code list. I have a bit of rattling in my exhaust until it heats up so I'm wondering if this is a new O2 code for '05's and later. Gonna take care of that rattling exhaust next week when I put the ported heads on.
Anybody have any info on the P1685? Truck has no driveability issues so it must not be too important.
Anybody have any info on the P1685? Truck has no driveability issues so it must not be too important.