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Home >> Hyundai >> 2016 >> Sonata Plug-In Hybrid >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis (PHEV) >> DTC P1774: Speed Command PWM Line >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring voltage range (Circuit open/short check)
 * OPU: Oil pump unit
  1. Circuit open or short
  2. PCM/TCM - OPU H/wired
Enable Condition
  • C-CAN BUS Off or OPU CAN Time out
  • 10V ≤ Battery voltage
Threshold Value
  • Signal low (Short ground)
  • Signal high (Short power)
  • Open circuit
Diagnostic Time
  • More than 0.2sec.
Fail safe
  • Do Not Drive
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