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DTC P0978: Notes

DTC P0978 [AW6A-EL, AW6AX-EL] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0978 Shift solenoid C range/performance (stuck)
DETECTION CONDITION 
  • Feedback current corresponding to solenoid current command value is irregular when engine is running.

Diagnostic support note: 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.
  • A PENDING CODE is not available.
  • FREEZE FRAME DATA is available.
  • The AT warning light illuminates.
  • The DTC is stored in the TCM memory.
POSSIBLE CAUSE 
  • ATF level low
  • Deteriorated ATF
  • Shift solenoid C stuck
  • Control valve stuck
  • TCM malfunction
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