Ok, so after having my 11' JKUR at the stealership for a week for the stupid airbag light, my check engine light comes on before I get a mile down the road from the shop. I hook up my reader and get a P0562 code; low voltage. Is it possible that while diagnosing my air bag problem, they left the ignition on for entirely to long and just drained my battery and now I'm getting this light? I read a few other sites and what the possible causes could be but I refuse to believe this is simply a coincidence after they had my how interior torn apart and were shooting wires for a week in my Jeep...That being said, I've already ran the Jeep for a long period of time to try and "charge" the battery back up, I'm getting a battery tester and charger as we speak, so I guess what I'm asking; is there anything else I can do to troubleshoot/fix this to avoid paying another 2 weeks pay at the dealership???

 

Test the battery for voltage and load before continuing to troubleshoot.
Battery voltage with engine off should be 12.6 volts or above.
Test the battery voltage with the engine running. It should be above 14 volts.

Here is some information for the code you have:

P0562-BATTERY VOLTAGE LOW

• When Monitored: The engine running. The engine speed greater than 1000 RPM.
• Set Condition: Battery voltage is less than 6 volts for a set period of time. One Trip Fault.
  
  
  NOTE: Make sure the Battery is in good condition. Using the Midtronics Battery Tester, test the Battery before continuing.
  
  NOTE: Inspect the vehicle for after market accessories that may exceed the Generator System output.
  
  NOTE: Make sure the generator drive belt is in good operating condition.
  
  
  NOTE: Inspect the fuses in the TIPM. If an open fuse is found, use the wire diagram/schematic as a guide, inspect the wiring and connectors for damage.

[TABLE]
[TR]
[TD="bgcolor: white, align: center"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE BATTERY POSITIVE CIRCUIT
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]RESISTANCE IN THE GENERATOR CASE GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]GENERATOR FIELD CONTROL CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]GENERATOR FIELD CONTROL CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]GENERATOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]POWERTRAIN CONTROL MODULE (PCM)
[/TD]
[/TR]
[/TABLE]