Toyota Highlander: P219A Meaning, Causes, & Diagnosis

P219A is a generic OBDII code.  The code indicates that your Toyota Highlander’s air/fuel ratio is out of balance (too rich or too lean). Your Highlander 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 P219A are … Read more

P2097 Toyota Highlander

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

Toyota Highlander 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 Toyota Highlander as it would any other.  This code appears when something has interrupted the communication between two of your Highlander’s control modules. The most common causes of U0073 are … Read more

Toyota Highlander P2276: B2S3 O2 Sensor Stuck Lean

P2276 is a general diagnostic trouble code.  It means that your Toyota Highlander’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, but … Read more

Toyota Highlander P2274:  B1S3 O2 Sensor – Stuck Lean

P2274 in the Toyota Highlander 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 can, … Read more

Toyota Highlander P2018:  Meaning + Diagnosis

P2018 is a generic diagnostic trouble code (DTC) that indicates an issue with your Toyota Highlander’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 Highlander’s … Read more