Limited Operating Strategy (LOS) Modes

For some hybrid electric system concerns the PCM may initiate one or more of the LOS modes. The objective of the LOS modes is to manage vehicle operation after one or more of the following systems are disabled due to a concern:

• engine
• electronically controlled CVT
• high voltage traction battery
• regenerative brake system

Some LOS modes limit the vehicle capability to a limp home condition. Other LOS modes fully disable the vehicle. The PCM initiates the appropriate LOS mode depending on the severity of the concern that was detected.

When the PCM detects system faults for which the LOS mode is initiated, it stores a corresponding diagnostic trouble code (DTC). The root cause of the concern that initiated the LOS mode may be in a different subsystem or component than indicated by the DTC. Therefore, these DTCs should be considered LOS or failure mode effects management (FMEM) only and are always assisted by the other, more detailed, circuit DTCs. The circuit DTCs should always be used to diagnose the problem before LOS or FMEM DTCs. LOS or FMEM DTCs do not mean the subsystem or component they describe actually failed, but indicate the subsystem or component that is effected by the LOS mode.

• P1A0C Hybrid Powertrain Control Module - Engine Disabled
• P1A0D Hybrid Powertrain Control Module - Generator Disabled
• P1A0E Hybrid Powertrain Control Module - Motor Disabled
• P1A10 Hybrid Powertrain Control Module - Battery Disabled
• P1A13 Hybrid Powertrain Control Module - Regenerative Braking Disabled
• P1A14 Hybrid Powertrain Control Module - Transmission Disabled