I have an intermittent code- P0A1F. At first I thought it was related to acceleration- but after many tests- it seems completely intermittent. Sometimes I get just the wrench light. Other times I get both the wrench and check engine light. I have reset the DTC's and Rmode re-balanced (30mins, 45 mins) twice. The only thing that this code dose every time is suspend the hybrid engine. The battery will not kick on while idling or while in low speed situations- after the warning lights come on. I have found that if I reset the DTC's then run a Rmode re-balance I can get the hybrid engine to work again - temporarily. As soon as the code pops, the hybrid engine won't assist. I can still turn the engine over though. The other odd thing is that the warning lights will not turn on every time. By that I mean, I can drive it for 20 miles. The warning lights will come on. I will then turn the engine off, leave and come back, turning the engine on. The warning lights are no longer there. But the hybrid battery functions are still suspended. I have posted the code list here, and the Forscan reading of the BCM after the code had popped.
What is causing this code to go off?

===PCM DTC P0A1F:00-27===
Code: P0A1F - Battery Energy Control Module A Performance
Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Powertrain Control Module
===END PCM DTC P0A1F:00-27===


===PCM DTC P2450:00-64===
Code: P2450 - EVAP System Switching Valve A Perfomance/Stuck Open
Status:
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete
Module: Powertrain Control Module
===END PCM DTC P2450:00-64===

===OBDII DTC P0A1F-P===
Code: P0A1F - Battery Energy Control Module A Performance
Status:
- Pending - malfunction is expected to be confirmed
Module: On Board Diagnostic II
===END OBDII DTC P0A1F-P===

===APIM DTC B1136-60===
Code: B1136 - Audio Steering Wheel Switch 2 Circuit Failure
Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Accessory Protocol Interface Module
===END APIM DTC B1136-60===

===BCM DTC P0A1F-60===
Code: P0A1F - Battery Energy Control Module
Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Battery Control Module
===END BCM DTC P0A1F-60===

===SDARS DTC B1031-60===
Code: B1031 - SDARS Satellite Antenna Open
Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Satellite Digital Audio Receiver System
===END SDARS DTC B1031-60===

===SDARS DTC U0184-20===
Code: U0184 - Lost Communication With Radio
Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Satellite Digital Audio Receiver System
===END SDARS DTC U0184-20===

===SDARS DTC U0255-60===
Code: U0255 - Lost Communication With Front Controls Interface Module
Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Satellite Digital Audio Receiver System
===END SDARS DTC U0255-60===

===HVAC DTC B12A5-60===
Code: B12A5 - Mode Door Actuator, Feedback Circuit Open or Shorted to Battery Voltage
Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Heating Ventilation Air Conditioning
===END HVAC DTC B12A5-60===

===GEM/SJB DTC B2050-20===
Code: B2050 - Right Rear Turn Lamp Circuit Short to Ground
Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
Module: Generic Electronic Module / Smart Junction Box
===END GEM/SJB DTC B2050-20===

 

Looks like you're getting P0A1F_27 and _31.

This is either because the cells in a given module are weak or failing, or a sensing issue with the BCM. The quick fix is to replace the BCM and see if that fixes it.

 

Is this the correct part? I want to make sure, as I can't seem to find it on rockauto.

ESCAPE 09 Multifunction; (front floor console), ID 9L8T-14C442-AB

 

No. The BCM is inside the battery.

 

 

That's the BCM.

 

Replaced the BCM with a new one. I cleared the DTC's and ran a Rmode re-balence twice (about 15 mins each). There are no BCM DTCs, but there are still battery faults. See below.

What is my next step? I know that as soon as I put 10 miles or more, I will probabley trigger the DTC again.

 

What am I missing? I don't see any faults. An extremely low SoC has the discharge disabled.

 

Sorry, I was looking at P0A1F_27-30. It dose not say Fault- I was looking at the cell failure. It still turns over- and we run it every two days. I dont know why it would have such a low State of Charge. Should I run it and do breaking?