Help!! P1396 and P1211 codes..
 

The P1396 left bank glow plug code has been there for a month. I've been procrastinating on fixing it cause its summer and the truck is running good.

It just threw the P1211 today and is idling rough. Its an ICP code.

Any advice on how to diagnose the problem? I'm hoping its a bad pig tail or sensor?

Thanks...

Fixed the P1211 that was making the car idle rough and lacking in power and MPG.

It was the ICP sensor. It was a little cracked. I could move it side to side a little and see the crack. It rusted a bit inside. I think this is why my MPG was sucking.

Truck runs good now. Still have to figure out the P1396 but being that its summer I don't really need to fix it till winter.