The 2021 Dodge Durango triggering P0705 indicates a problem with the transmission range sensor (TRS) circuit. This three-row SUV's 8-speed automatic transmission uses this sensor to determine gear selector position.
Understanding P0705
P0705 sets when the transmission control module receives an invalid or multiple signals from the transmission range sensor. The sensor tells the TCM which gear (P, R, N, D, etc.) the driver has selected.
Range Sensor Function
The TRS, also called the PRNDL switch or neutral safety switch, reads the position of the gear selector linkage. The TCM uses this information to determine which gear to engage and to allow starting only in Park or Neutral.
Symptoms of Failure
Wrong gear display on dashboard. No-start condition if TCM doesn't see Park/Neutral. Harsh or incorrect shifts. Backup lights malfunctioning. Transmission may enter limp mode.
Common Causes
Sensor element failure. Misadjusted sensor or linkage. Corroded or damaged connector. Wiring issues between sensor and TCM. Linkage wear affecting sensor reading.
Adjustment Check
The TRS may require adjustment after transmission service or linkage work. Improper adjustment causes incorrect position readings. Adjustment procedure varies by vehicle—consult service information.
Repair Costs
TRS adjustment costs $50-150 if that's all needed. Sensor replacement runs $200-500. Linkage repair ranges $150-400.