P0021 on Jeep
Intake Camshaft Position Timing - Over-Advanced (Bank 2)
P0021 on Jeep vehicles indicates intake camshaft position timing - over-advanced (bank 2). Au7o has documented this code across 1 Jeep model — most commonly on Cherokee. 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 Jeep by Model
Jeep Cherokee(1 issue)
- Engine Stalling (Multiple Causes)2014-2023
Multiple factors cause sudden engine stalling including low oil levels (2.4L), VVT issues, faulty sensors, fuel system problems, and transmission-related stalling (2019 9-speed). Stalling typically emerges after ~1,000 miles.
Looking for P0021 on a different make?
View P0021 across all makes →Frequently Asked Questions
What does P0021 mean on Jeep?▼
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 Jeep specifically, this code is documented across 1 model.
What causes P0021 on Jeep vehicles?▼
Common causes on Jeep: 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 Jeep?▼
Repair costs vary widely depending on the root cause and specific Jeep model.
Which Jeep models have P0021 documented?▼
Au7o has documented P0021 on 1 Jeep model: Cherokee.