Posts Tagged: alternator not charging
What the P0622 Code Means and How to Fix It Fast
P0622 Code: Why Your Alternator Isn’t Charging Properly Quick Summary The P0622 code indicates a malfunction in the generator field control circuit. In simple terms, the engine computer (PCM or ECM) is not able to properly control the alternator’s field circuit, which regulates battery charging. In practical terms, it means the engine computer cannot properly monitor or control the alternator’s output. If ignored, a P0622 code can eventually lead to a dead battery and vehicle stalling because the charging system cannot properly regulate voltage. Article What the P0622 Code Really … Read More
How to Tell If Your Alternator Is Bad
How to test an alternator using a multimeter Quick Summary You don’t need expensive diagnostic equipment to test your car’s alternator. A quality digital multimeter and a few minutes are all it takes to determine whether your alternator is charging properly. The key is following the correct testing procedure—checking battery voltage first, measuring charging voltage under load, and understanding how modern computer-controlled charging systems operate. Most importantly, never disconnect the battery while the engine is running. That outdated trick can destroy thousands of dollars’ worth of electronic modules. How to … Read More