P1B15 CADILLAC - Regenerative Braking Torque Request Signal Message Counter Incorrect
- Reprogram Motor Generator Power Inverter Module
- Faulty Motor Generator Power Inverter Module
- Motor Generator Power Inverter Module harness is open or shorted
- Motor Generator Power Inverter Module circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P1b15 Cadillac DescriptionThis diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately. The hybrid powertrain control module monitors its ability to read and write to the memory. The hybrid powertrain control module processor monitors the data to verify that the indicated brake torque request calculation is correct.
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