P0021 Code. Jun 5, 2024 · Learn what the P0021 code is, its common symptom
Jun 5, 2024 · Learn what the P0021 code is, its common symptoms, triggers, and the correct approach to diagnosis and repair with the help of this guide. Read the full article below to know what it means, how to fix it, and what other codes may show related to it. Learn what P0021 means, its causes, and how to fix it. This is one of the most frequent OBD2 trouble codes. I also show you the symptoms you might notice and give you some tips to fix them. The engine control module (PCM) uses a signal from the camshaft position sensor to determine the the proper time to fire the fuel injectors and ignite the spark plugs. But VVT issues trigger codes like P0021 for camshaft over-advancement. Jan 7, 2023 · Learn all about the P0021 OBD-II trouble code. This code specifically refers to camshaft position 'A', which typically indicates the intake camshaft. Apr 7, 2024 · The P0021 code is a generic OBD-II trouble code that indicates a problem with the “A” Camshaft Position – Timing Over-Advanced or System Performance on Bank 2 of the engine. Dec 9, 2025 · Variable valve timing optimizes engine performance. Read on. In this guide, I review the meaning and causes behind the P0021 trouble code. . Apr 7, 2022 · Check engine light code P0021 means Intake Camshaft Position Timing- Over-Advanced (Bank 2). Learn what causes a P0021 code, how severe the problem is, and how to properly diagnose and fix it. Find out how to fix it in this article! This is one of the most frequent OBD2 trouble codes. What Does the P0021 Code Mean? OBD-II Code P0021 is defined as a "A" Camshaft Position - Timing Over-Advanced or System. Find out how to fix it in this article! The diagnostic trouble code P0021 indicates that the Engine Control Module (ECM) has detected that the camshaft position for bank 2 is over-advanced or that there is a performance issue. The diagnostic trouble code P0021 indicates that the Engine Control Module (ECM) has detected that the camshaft position for bank 2 is over-advanced or that there is a performance issue. This fault confuses computer controls, resulting in various issues. May 23, 2025 · When the Check Engine Light comes on and you scan the P0021 code, you need to know what to do next. Follow our simple guide to quickly resolve P0021 and get your equipment back to optimal performance. What causes it, symptoms to look out for, and how to fix it yourself. Jan 7, 2023 · Learn all about the P0021 OBD-II trouble code.