DTC P0A1F-129: Battery Energy Control Module: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A1F-129 only is output.	A
   Any of the following DTCs are also output.	B

   DTC No.	Relevant Diagnosis
   P0A1A-151, 155, 156, 658, 659	Generator Control Module
   P0A1B-163, 164, 193, 511, 512, 661, 786, 788	Drive Motor "A" Control Module
   U0110-159, 160, 656, 657	Lost Communication with Drive Motor Control Module "A"

   HINT: 

   P0A1F-129 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

5. Turn the power switch off.

B → See step   4 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A1F-129 only is output.	A
   U029A-123 is also output.	B

5. Turn the power switch off.

B → See step   5 

A → See step   3