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DTC P0A4B: Generator Position Sensor Circuit

DTC P0A4B: GENERATOR POSITION SENSOR CIRCUIT

Description:  The TCM uses calibrated offsets stored in the transmission identification (TRID) block to operate the generator and traction motors. This DTC sets when the TRID block is not correctly programmed after TCM replacement or if the TRID block is erased, and vehicle performance is reduced.
Possible Causes: 
  • TRID block not correctly programmed after TCM replacement
  • TRID block erased
  • Damaged TCM
Diagnostic Aids:  Verify the TCM TRID block has been programmed correctly. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Clear the SOBDMC DTCs. Repeat the self-test. If the DTC is retrieved again, install a new TCM. Refer to the appropriate Automatic Transmission article. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the TRID Block for a Replacement TCM.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
Refer to the appropriate articles related to the description, possible causes and diagnostic aids.
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