Chevy Monte Carlo P0523: Meaning, Causes, + Likely Fixes

P0523 is a standard OBD2 trouble code that can occur in the Chevy Monte Carlo. In layman’s terms, it indicates the signal from the oil pressure sensor is higher than its normal operating range (in terms of voltage). P0523 is generic (it has the same definition for all vehicles), repair steps will depend on your … Read more

Chevy Monte Carlo: Engine Power Reduced

Many late model GM-made vehicles, such as the Chevy Monte Carlo use an “Engine Power Reduced” mode when they detect a potentially catastrophic problem. Reduced engine power has been known to come on at very inopportune times (such as while driving on the highway). Many components can cause the engine power to be reduced. The … Read more

Chevy Monte Carlo P0705: Meaning, Causes, & Diagnosis

P0705 is a very common transmission-related trouble code that can occur in the Chevy Monte Carlo. In layman’s terms, it means that your Monte Carlo can’t tell what gear you’ve selected, which can have some real consequences on how it drives. It’s most likely caused by a bad Transmission Range Sensor (TRS), but there are … Read more

Chevy Monte Carlo: DRL Warning Light On – Causes + Fix

Daytime running lights (or DRL) are specialized lights that come on when your Chevy Monte Carlo’s regular headlights are turned off. Their purpose is to make it easier for other drivers to see you, theoretically decreasing the odds of getting into an accident. If your Monte Carlo’s DRL warning light is on, the powertrain control … Read more

Chevy Monte Carlo P2271: Meaning, Causes, + Diagnosis

P2271 is a generic DTC trouble code that can affect the Chevy Monte Carlo. It indicates that the oxygen sensor located on bank 1 in the second position is continuously sending voltage with a value that is too rich. There are oxygen sensors on both sides of the catalytic converter. The “upstream” one is used … Read more

Chevy Monte Carlo P0605: Meaning, Causes, + Fix

P0605 is a relatively rare OBD-II trouble code that can occur in the Chevy Monte Carlo. It indicates that PCM (powertrain control module) is not passing its ROM (read-only memory) self-test when you turn the ignition on. While P0605 is a generic code (it has the same meaning for any car or truck), it is … Read more

Chevy Monte Carlo P0116: Meaning, Causes, + Diagnosis

P0116 indicates that your Chevy Monte Carlo’s engine coolant temperature sensor is sending a signal to the PCM (powertrain control module) that is outside of its normal operating range (in terms of voltage). While P0116 is a generic OBD2 code (it has the same definition for any car or truck), it has the same basic … Read more