LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2000 >> LS 400 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0121: Throttle Position (TP) Sensor Circuit Range/Performance Fault >> Circuit Description

Circuit Description

The TP sensor is a dual variable resistor sensor that monitors throttle opening and TP sensor malfunction. Based on the TP sensor signal, the ECM determines vehicle driving condition and adjusts air/fuel mixture accordingly. DTC is set when VTA and VTA2 circuit voltage on TP sensor is out of range for 2 seconds. Possible cause is:

scientia non olet · About LEMON Manuals