Lexus IS 300: P219A Meaning, Causes, & Diagnosis

P219A is a generic OBDII code.  The code indicates that your Lexus IS 300’s air/fuel ratio is out of balance (too rich or too lean). Your IS 300 is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are reporting the problem with the air-fuel ratio.   With … Read more

Lexus IS 300 U0100:  Lost Communication with ECM/PCM “A”

U0100 is a generic diagnostic trouble code, meaning it has the same definition for any vehicle made in the 1996 model year or newer (including the Lexus IS 300).  This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. When a vehicle … Read more

P2097 Lexus IS 300

P2097 is a generic OBD II code, which means that it has the same meaning for the Lexus IS 300 as it would any other vehicle.  It specifically indicates that your IS 300 detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter is too rich. (too much fuel for the amount … Read more

Lexus IS 300 U0073: Meaning, Symptoms, + Diagnosis

U0073 Definition: Control Module Communication Bus”A” Off U0073 is a fairly common trouble code.  It is generic, so it has the same meaning for your Lexus IS 300 as it would any other.  This code appears when something has interrupted the communication between two of your IS 300’s control modules. The most common causes of … Read more

Lexus IS 300 P2276: B2S3 O2 Sensor Stuck Lean

P2276 is a general diagnostic trouble code.  It means that your Lexus IS 300’s third (from the exhaust manifold) “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture.   Having this code does not necessarily mean that the vehicle is running lean (although it can, … Read more

Lexus IS 300 P2274:  B1S3 O2 Sensor – Stuck Lean

P2274 in the Lexus IS 300 is a general diagnostic trouble code.  It means that the “bank 1” oxygen sensor (third oxygen sensor from the exhaust manifold, behind a catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture.   This does not necessarily mean that the vehicle is running lean (although it … Read more

Lexus IS 300 P2018:  Meaning + Diagnosis

P2018 is a generic diagnostic trouble code (DTC) that indicates an issue with your Lexus IS 300’s intake manifold runner position sensor/valve (from here on out, we will be referring to this sensor by its common abbreviation of IMRC). P2018 Definition: IMRC – Switch Circuit Intermittent (Bank 1) IMRC The IMRC’s job is to help your … Read more