I just did a DTC check on my truck and pulled these to codes. I always Monitor my voltage with Torque Pro and the FICM has never dropped below 47v. My batteries check at 12.6v with a volt meter.

Some quick background, I just finished doing work on the truck last weekend. The batteries were d/c'ed for about a week, but I charged them both before starting the truck up again. I did pull the FICM relay while I cranked the motor to prime the oil system. Is it possible these where left over from that? I have not a long or no start situation.

 

Battery checks need to be a load test. Not much help to just check the voltage.

Doesn't hurt to clear the codes and see if they come back.

 

Mark is absolutely on track. If the truck is running fine now, you clear the codes and don't have them come back....I'd say you are in good shape!

 

Kind of what I figures, just left from when I cranked with the relay removed. Thought I cleared all the codes at that time, must have missed those. I have since cleared them and so far they haven't returned. Was just checking.

 

It's always nice to dodge a bullet! Glad you are up and running!!

 

If there's ever a next time..... to crank the engine to prime oil, use the starter trigger wire near the passenger side fender on the firewall by disconnecting it and touching it to the + battery terminal. Then no addition of codes, no cycling of glowplugs for no reason, and no reason to pull relay.