P0011
Medium SeverityIntake Camshaft Position Timing Over-Advanced (Bank 1)
Engine System
P0011 — Instant Answer
Intake Camshaft Position Timing Over-Advanced (Bank 1)
Severity: MEDIUM SEVERITY
Meaning: The intake camshaft on bank 1 is more advanced than the ECM commanded. This typically means the VVT system is stuck or the oil flow is restricted. Often caused by dirty oil or a stuck VVT solenoid.
Safe to drive? Usually yes with caution, but confirm root cause before long trips.
Estimated repair cost: $30 - $150
Most common causes:
- 1. Dirty or low engine oil (35-45% of cases)
- 2. Stuck VVT solenoid (35-45% of cases)
- 3. Stretched timing chain (10-25% of cases)
- 4. Clogged oil passages (10-25% of cases)
Common Causes
How to Diagnose P0011
- 1Check oil level and condition — change if overdue
- 2Inspect VVT solenoid for sludge
- 3Check timing chain tension
- 4Scan for related codes
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Related Codes
The engine computer cannot control the variable valve timing solenoid on bank 1. This affects engine performance and fuel economy. Usually caused by a faulty VVT solenoid or wiring issue.
The intake camshaft on bank 1 is more retarded than commanded by the ECM. This reduces engine performance and efficiency. Often related to oil viscosity issues or a failing VVT actuator.
The exhaust camshaft on bank 1 is more advanced than the ECM expects. Usually caused by sludged oil blocking the VVT actuator or a stuck solenoid.
Frequently Asked Questions
- Is P0011 serious?
- P0011 is moderately serious. If caused by low oil, fix immediately to prevent engine damage. A stuck solenoid should be replaced within a week.
- Can an oil change fix P0011?
- Yes, in many cases a fresh oil change clears P0011 if the cause was dirty or low oil restricting the VVT system.
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Author & Review
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07