April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0851: Park / Neutral Switch Input Circuit Low; DTC P0852: Park / Neutral Switch Input Circuit High [05/2014 - ]: Description

DTC No.

DTC Detection Condition

Trouble Area

P0851

for Manual Transmission

No non-neutral position detected in shift change running state (judged based on changes in the relationship between vehicle speed and engine speed) (2 trip detection logic)

for Automatic Transmission

The CAN data received from the TCM is "P or N" position signal while the park/neutral position switch assembly is not in P or N position. (2 trip detection logic)

for Manual Transmission

Open or short in neutral position switch signal circuit
Neutral position switch
ECM

for Automatic Transmission

Open or short in park/neutral position switch signal circuit
Park/neutral position switch assembly
ECM
TCM

P0852

for Manual Transmission

No neutral position detected in shift change running state (judged based on changes in the relationship between vehicle speed and engine speed) (2 trip detection logic)

for Automatic Transmission

The CAN data received from the TCM is other than "P or N" position signal while the park/neutral position switch assembly is in P or N position. (2 trip detection logic)

for Manual Transmission

Open or short in neutral position switch signal circuit
Neutral position switch
ECM

for Automatic Transmission

Open or short in park / neutral position switch signal circuit
Park/neutral position switch assembly
ECM
TCM