LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Tacoma TRD Pro, Automatic Trans >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Transfer DTCS >> Touch Select 2-4 And High-Low System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Touch Select 2-4 And High-Low System

TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2015 - 11/2017]

DTC Code Description
P163B 4WD ECU Malfunction
P17A0 Automatic Disconnecting Differential Motor Control Circuit Open
P17A4 Automatic Disconnecting Differential Motor Limit Switch Circuit
P17A8 Transfer Shift Motor Control Circuit Circuit Open
P17A9 Transfer Shift Motor Control Circuit Low
P17AA Transfer Shift Motor Control Circuit High
P17AC Transfer Shift Motor Limit Switch Circuit
P17C7 Front Differential Oil Temperature Sensor Circuit Low
P17C8 Front Differential Oil Temperature Sensor Circuit High
P2772 Four Wheel Drive (4WD) Low Switch Circuit Range / Performance
P279E Four Wheel Drive (4WD) Range Signal Circuit Range / Performance
U0100 Lost Communication with ECM / PCM "A"
U0122 Lost Communication with Vehicle Dynamics Control Module
U0416 Invalid Data Received From Vehicle Dynamics Control Module
TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [11/2017 - 09/2019]

DTC Code Description
P163B 4WD ECU Malfunction
P17A0 Automatic Disconnecting Differential Motor Control Circuit Open
P17A4 Automatic Disconnecting Differential Motor Limit Switch Circuit
P17A8 Transfer Shift Motor Control Circuit Circuit Open
P17A9 Transfer Shift Motor Control Circuit Low
P17AA Transfer Shift Motor Control Circuit High
P17AC Transfer Shift Motor Limit Switch Circuit
P17C7 Front Differential Oil Temperature Sensor Circuit Low
P17C8 Front Differential Oil Temperature Sensor Circuit High
P2772 Four Wheel Drive (4WD) Low Switch Circuit Range / Performance
P279E Four Wheel Drive (4WD) Range Signal Circuit Range / Performance
U0100 Lost Communication with ECM / PCM "A"
U0122 Lost Communication with Vehicle Dynamics Control Module
U0416 Invalid Data Received From Vehicle Dynamics Control Module
TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [09/2019 -]

DTC Code Description
P163B 4WD ECU Malfunction
P17A0 Automatic Disconnecting Differential Motor Control Circuit Open
P17A4 Automatic Disconnecting Differential Motor Limit Switch Circuit
P17A8 Transfer Shift Motor Control Circuit Circuit Open
P17A9 Transfer Shift Motor Control Circuit Low
P17AA Transfer Shift Motor Control Circuit High
P17AC Transfer Shift Motor Limit Switch Circuit
P2772 Four Wheel Drive (4WD) Low Switch Circuit Range / Performance
P279E Four Wheel Drive (4WD) Range Signal Circuit Range / Performance
U0100 Lost Communication with ECM / PCM "A"
U0122 Lost Communication with Vehicle Dynamics Control Module
U0416 Invalid Data Received From Vehicle Dynamics Control Module