Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2002 >> ES 300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1133 Or DTC P1153 >> Circuit Description

Circuit Description

Air/Fuel (A/F) sensor monitors exhaust gas oxygen content and delivers an input signal to ECM. ECM uses input signal to control air/fuel ratio. A/F sensor includes a heater. DTC is set when A/F sensor output does not change with engine speed at 1600 RPM or more with vehicle speed at more than 38 MPH. DTC P1133 is for bank No. 1 A/F sensor. DTC P1153 is for bank No. 2 A/F sensor. Possible causes are:

scientia non olet · About Mike's Workshop Manuals