P219B is a generic OBD2 trouble code. This code indicates that your Chevy Blazer’s air/fuel ratio is out of balance (too rich or too lean) on the bank 2 side of the engine in question. Your Blazer is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are … Read more
P219A is a generic OBDII code. The code indicates that your Chevy Blazer’s air/fuel ratio is out of balance (too rich or too lean). Your Blazer 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
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 Chevy Blazer). 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 has … Read more
P2099 is a generic OBD II code. It has the same meaning for the Chevy Blazer as it would any other vehicle. It specifically indicates that your Blazer detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter on the bank 2 side of the engine is too rich. (too much fuel … Read more
P2097 is a generic OBD II code, which means that it has the same meaning for the Chevy Blazer as it would any other vehicle. It specifically indicates that your Blazer 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
P2098 is a generic OBD II code. It specifically indicates that your Blazer detected a lean condition after the catalytic converter (too much air for the amount of fuel present). P2098 Definition This particular code is generic, so it has the same meaning for your Chevy Blazer as any other vehicle. There are three parts … Read more
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 Chevy Blazer as it would any other. This code appears when something has interrupted the communication between two of your Blazer’s control modules. The most common causes of U0073 are … Read more
P2276 is a general diagnostic trouble code. It means that your Chevy Blazer’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
P2274 in the Chevy Blazer 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
P2018 is a generic diagnostic trouble code (DTC) that indicates an issue with your Chevy Blazer’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 Blazer’s … Read more