P1705 – Throttle Position Sensor (AT) (Toyota)

Description

The ECM detected an abnormal throttle position sensor signal affecting automatic transmission shift control.

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Symptoms

Harsh shifting
Delayed shifting
Poor acceleration
Hesitation
Check engine light

Causes

Faulty TPS sensor
Wiring issues
Connector corrosion
Throttle body wear
TCM signal error

Diagnosis

Test TPS sensor
Inspect wiring
Check connectors
Scan live data
Inspect throttle body

Repair

Replace TPS sensor
Repair wiring
Clean connectors
Service throttle body