P0021 on Lexus
Intake Camshaft Position Timing - Over-Advanced (Bank 2)
P0021 on Lexus vehicles indicates intake camshaft position timing - over-advanced (bank 2). Au7o has documented this code across 1 Lexus model — most commonly on GS. 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.
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 Lexus by Model
Lexus GS(1 issue)
- VVT Gear Assembly Bolts Loosen and Sprocket Separates - 2GR-FSE (Recall 13V395000)2007-2011
On 2007-2011 GS 350 vehicles with the 2GR-FSE V6 built 19 June 2006 through 12 July 2011, the bolts that secure the housing and the sprocket of the variable valve timing gear assembly can loosen. The loosening is driven by abnormal impacts generated inside the gear assembly right after a cold start, when oil pressure to the VVT unit has not yet built. If the bolts back out far enough the VVT gear housing and sprocket separate, valve timing is lost and the engine stops while the car is being driven. Important distinction: this is NOT the rubber VVT-i oil supply hose failure that swept the 2GR-FE family (Camry/Avalon/RAV4/ES 350/RX 350). The GS 350's 2GR-FSE uses metal VVT-i oil lines from the factory and is not part of that hose campaign - the GS 350's VVT problem is this bolt/gear-assembly defect instead. Merging the two is the most common error made on this nameplate.
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View P0021 across all makes →Frequently Asked Questions
What does P0021 mean on Lexus?▼
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 Lexus specifically, this code is documented across 1 model.
What causes P0021 on Lexus vehicles?▼
Common causes on Lexus: 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 Lexus?▼
Repair costs vary widely depending on the root cause and specific Lexus model.
Which Lexus models have P0021 documented?▼
Au7o has documented P0021 on 1 Lexus model: GS.