Ok checked the codes just to see since I have the FP3 now. This code has came up twice now. I know how to clear the codes but how do I find what is causing this code to come up.

 

Per the 2014 Electrical Diagnostic Manual:

B2112 - ACC output shorted high

Conditions for Setting
The accessory circuit normally has power when the IGN is ON or in the ACC positions. If the accessory circuit has power when the IGN is OFF, then the BTC B2112 will set.

DTC B2114 will set if the accessory circuit draws more than 20 Amps.

The other accessory circuit DTCs will set if the BCM identifies them with the IGN ON or in the ACC position.

Diagnostic Tips
This circuit may be used for aftermarket accessories or systems. If a code is set and cannot be duplicated, check for aftermarket devices.

Possible Causes
Short to battery in the accessory power circuit.

1. Accessory Power Circuit Short to Voltage Test

1. Turn IGN OFF.
2. Using HARNESS CONNECTOR TEST KIT (Part No. HD-41404), test voltage between DLC [91A] terminal 5 and ground.
3. Is battery voltage present?

Yes. Repair short to voltage on (R/Y) wire.
No. Go to Test 2.

2. BCM Test

1. Clear DTC.
2. Turn IGN ON-OFF>
3. Check for DTCs.
4. Did DTC return?

Yes. Replace BCM.
No. Concern is intermittent. Accessory devices may have caused DTC to set. Inspect & repair as needed.


Good luck!

 

Thanks for the info I will be checking it tonight. The only accessory I know of is a second battery tender cable. I have charged my phone off of.