It seems like it may be a TPS sensor, MAF sensor, or the connectors/wiring going to them. Here is some more info: http://www.ford-trucks.com/forums/324349-p1120-p1121.html
If you want to diagnose the issue, I will be happy to further assist you. I will need to know what your vehicle is and engine size.
SOURCE: What are codes p1249 &
P1211 Injector Control Pressure Sensor Above / Below Desired
P1249 Wastegate Control Valve Performance
P1211
We all know that this code is commonly caused by "Hot Chips" that are demanding more Injection Control Pressure (ICP) than the High Pressure Oil Pump can deliver. For what it's worth, these are the exact parameters that trigger this code:
This code can also be caused by legitimate High Pressure Oil System issues. Below is a list of some of the causes:
P1249 it is the HPOP, above or below pressure, if you have added a performance chip to your vehicle , you will get this code from time to time, basically its Turbo over boost
SOURCE: P1211 and P0603 codes have come on after installing superchip
CODE PO 603 PCM KEEP ALIVE MEMORY TEST ERROR. POSSIBLE CAUSE.BATTERY HAS BEEN DISCONNECTED.DUE TO CLEANING CABLES OR REPLACING BATTERY.WHATS HAPPEN WHEN YOU DISCONNECT CAR BATTERY YOUR PCM LOST ITS MEMORY.SO THE PCM WILL RELEARN ITS MEMORY.IF THE SERVICE LIGHT STAYS ON TAKE IT TO THE FORD DEALERSHIP.
SOURCE: i have p1211 and p1249 codes on 2000 F-250. What
the 1211 is [injector control pressure sensor above / below desired] the 1249 is[wastegate control valve performance] check the wastegate for proper operation valve not sticking proper lube no leaks or cracked lines and check the wiring and connections to the injector control pressure sensor
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