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DTC P0A90: Drive Motor A Performance

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0A90 - DRIVE MOTOR A PERFORMANCE

Description:  This DTC indicates a traction motor malfunction.
Possible Causes: 
  • Motor resolver malfunction.
  • Motor resolver/current sensor power supply malfunction.
  • Motor current feedback malfunction.
Diagnostic Aids:  Clear the transaxle control module (TCM) continuous DTCs. Carry out a TCM KOEO on demand self-test. If DTC P0A90 is present again, install a new transaxle. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT) . If the DTC is not present, fault can not be duplicated or identified at this time. GO to Pinpoint Test Z for intermittent diagnostics.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All See (1) - See (2)
(1) Install a new transaxle. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT) .
(2) Clear the transaxle control module (TCM) continuous DTCs. Carry out a TCM KOEO on demand self-test. If DTC P0A90 is present again, install a new transaxle. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT) . If the DTC is not present, fault can not be duplicated or identified at this time. Go to PPT Z for intermittent diagnostics.
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