P0021 on Volkswagen
Intake Camshaft Position Timing - Over-Advanced (Bank 2)
P0021 on Volkswagen vehicles indicates intake camshaft position timing - over-advanced (bank 2). Au7o has documented this code across 1 Volkswagen model — most commonly on Passat. P0021 means the engine computer detected that the intake camshaft on bank 2 is timed too far advanced and won't return to its commanded position. Most modern engines use variable valve timing (VVT), where an oil-pressure-driven actuator rotates the camshaft to optimize power and efficiency; the PCM compares the camshaft's actual position to its target. When the cam stays over-advanced beyond an acceptable limit, this code sets. Bank 2 refers to the side of the engine that does not contain cylinder number one. You may notice rough idle, reduced performance, or lower fuel economy. Typical repair costs on Volkswagen range from $500 to $4,000, depending on the specific model and root cause.
Common Causes of P0021
- •Dirty or low engine oil restricting the VVT system
- •Stuck or failed camshaft oil control valve (VVT solenoid) on bank 2
- •Clogged VVT solenoid screen or oil passage
- •Faulty camshaft position actuator / phaser
- •Wiring or connector fault at the VVT solenoid
- •Camshaft or crankshaft position sensor problems
- •Worn timing chain, guides, or stretched chain altering cam timing
P0021 on Volkswagen by Model
Volkswagen Passat(1 issue)
- 1.8T Engine Oil Sludge Formation1998-2005
The 1.8T turbocharged engine in the B5/B5.5 Passat is notorious for oil sludge buildup that can block oil passages and starve the turbo and camshaft bearings. Extended oil change intervals and the small oil capacity of the 1.8T contribute to this issue. Can lead to catastrophic engine failure if not addressed.
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View P0021 across all makes →Frequently Asked Questions
What does P0021 mean on Volkswagen?▼
P0021 stands for "Intake Camshaft Position Timing - Over-Advanced (Bank 2)." P0021 means the engine computer detected that the intake camshaft on bank 2 is timed too far advanced and won't return to its commanded position. Most modern engines use variable valve timing (VVT), where an oil-pressure-driven actuator rotates the camshaft to optimize power and efficiency; the PCM compares the camshaft's actual position to its target. When the cam stays over-advanced beyond an acceptable limit, this code sets. Bank 2 refers to the side of the engine that does not contain cylinder number one. You may notice rough idle, reduced performance, or lower fuel economy. On Volkswagen specifically, this code is documented across 1 model.
What causes P0021 on Volkswagen vehicles?▼
Common causes on Volkswagen: Dirty or low engine oil restricting the VVT system, Stuck or failed camshaft oil control valve (VVT solenoid) on bank 2, Clogged VVT solenoid screen or oil passage, Faulty camshaft position actuator / phaser, Wiring or connector fault at the VVT solenoid. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0021 on a Volkswagen?▼
Repair costs on Volkswagen range from $500 to $4,000, depending on the specific model and root cause.
Which Volkswagen models have P0021 documented?▼
Au7o has documented P0021 on 1 Volkswagen model: Passat.