P0A27 (Pcm) - Hybrid Battery Power Off Circuit
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0A27 (PCM) - HYBRID BATTERY POWER OFF CIRCUIT
| Description: | The powertrain control module (PCM) continuously monitors the battery power off (BPO) circuit and the controller area network (CAN) signal for a BPO request from the traction battery control module (TBCM). The PCM sets this DTC when it detects a BPO circuit concern and the CAN signal does not indicate a BPO request. | |||
| Possible Causes: |
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| Diagnostic Aids: | The presence of PCM DTC P0A28 and TBCM DTC P0A27 indicates the BPO request, not a circuit concern. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | refer to PINPOINT TEST QE . | - | - | |