What does p0172 mean on a fuel trim?
Regarding your fuel trim problem, P0172 means the engine is using too much fuel, and the ECM is trying to reduce it. If there are fuel problems, such a leaking fuel injector or stuck fuel pressure regulator, unmetered fuel will simply dump into the cylinders.
What does the p0172 code on a PCM mean?
Too much fuel and not enough air is considered rich – too much air and not enough fuel is considered lean. The P0172 code indicates that the ECM/PCM is or has detected a rich condition.
Can you check fuel pressure with negative trims?
Cleared the codes and it threw a multiple misfire code, checked the trims, still the same only when hot it went from -30 to -20 when injector 4 was unplugged, others were better but still negative. Other day when I did it they went to positive numbers like they were supposed to. Can’t check fuel pressure cause I don’t have the right kit.
What does fuel trim system rich bank 1 mean?
P0172 CHEVROLET Fuel Trim System Rich Bank 1: Code Meaning, Causes, Symptoms, & Tech Notes P0172 CHEVROLET | Fuel Trim System Rich Bank 1 | The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and
What does the DTC code p0172 stand for?
Diagnostic trouble code (DTC) P0172 stands for “Fuel System Too Rich (Bank 1)”. Your car’s computer will set the code when it determines that there’s too much fuel (or too little oxygen) in the engine’s air-fuel mixture.
Is the p0172 fuel injection system too rich?
P0172 with P0175 or MAF DTCs – If you note both P0172 and P0175 or concurrent MAF-related DTCs, then you can likely rule out individual cylinder, ignition, and fuel injector problems. Instead, focus on the fuel injection system and the MAF.
P0172 CHEVROLET Fuel Trim System Rich Bank 1: Code Meaning, Causes, Symptoms, & Tech Notes P0172 CHEVROLET | Fuel Trim System Rich Bank 1 | The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and
What does ECM mean on Chevy p0172?
P0172 Chevrolet Meaning. The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open Loop and Closed Loop.