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DTC P0891 At Relay - Open Circuit: DTC Detecting Condition

WARNING: This page is about a different car, the 2007 Kia Sedona and 2006 Kia Sedona. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION CHART

Item Detecting Condition Possible cause
DTC Strategy 
  • Check voltage range
  • Open or short in circuit
  • Faulty A/T control relay
  • Faulty PCM/TCM
Enable Conditions 
  • 16V > Voltage Battery > 11V
  • A/T Relay = ON
Threshold value 
  • Feedback Voltage ≥ 20V
Diagnostic Time 
  • 1 second
Fall Safe 
  • Locked in 3 rd gear. (control relay off)
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