LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2021 >> Clarity Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Advanced Diagnostics (P081C - U160B) (Plug-In) >> Advanced Diagnostics >> DTC P084F
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P084F

DTC P084F:  Park/Neutral Switch Output Circuit

General Description 

GHH416790Courtesy of HONDA, U.S.A., INC.
GHH416791Courtesy of HONDA, U.S.A., INC.

The SBW shifter control module in the SBW shifter assembly judges the parking position by the output voltage from the park position sensor. The SBW shifter control module switches the ATP-P output to Hi/Lo according to the parking condition of the transmission. The SBW shifter control module monitors the return signal of the ATP-P output, and when the return signal and ATP-P output does not match for a specified duration, the powertrain control module (PCM) receives malfunction from the SBW shifter control module, and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type 

Execution Continuous
Sequence None
Duration 2 seconds or more
DTC Type One drive cycle, MIL off, Shift position indicator blinks

Enable Conditions 

Condition  
Vehicle ON mode

Malfunction Threshold 

The return signal and ATP-P output does not match for at least 2 seconds.

Possible Cause 

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • SBW shifter control module ATP-P line short to ground
  • SBW shifter control module ATP-P line short to power
  • SBW shifter assembly internal failure
  • Body control module internal failure

Confirmation Procedure 

Operating Condition 

  1. Turn the vehicle to the ON mode.
  2. Shift the transmission to P position/mode, and wait for at least 10 seconds.
  3. While pressing the brake pedal, shift the transmission to N position/mode, and wait for at least 10 seconds.

With the HDS 

None.

Diagnosis Details 

Conditions for setting the DTC 

When a malfunction is detected, the shift position indicator blinks and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.

Conditions for clearing the DTC 

The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.