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2003 Lexus IS300 3.0L Poor Fuel Economy, MIL Lamp on
Posted to Asian Driveability on 7/17/2009 9 Replies

We have a problem with the closed loop fuel control. The system does not want to go into closed loop after the car is warmed up. We have installed a new coolant sensor, thermostat, computer, and O2 B2S1. We also checked the wiring for any shorts or anything li...

9 Replies Received (View Replies)

  Related Documents & Media  2003 Lexus IS300

 
Message Closed w/FIX

car Vehicle Data

2003 Lexus IS300

VIN JTHBD19223
Engine3.0 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy, MIL Lamp On
OccursHot

Trouble Codes

P0125Engine Coolant Temperature Sensor Slow Response
Message Closed w/FIX

car Vehicle Data

2003 Lexus IS300

VIN JTHBD19223
Engine3.0 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy, MIL Lamp On
OccursHot

Trouble Codes

P0125Engine Coolant Temperature Sensor Slow Response