What Does P0011 Mean?
The PCM has detected that the intake camshaft timing on Bank 1 is more advanced than commanded. This indicates the Variable Valve Timing (VVT) system is not responding correctly to the ECM's oil control valve commands. The over-advanced condition typically manifests at idle or low RPM where the camshaft should be near its default retarded position.
Common Causes
30%
Incorrect engine oil viscosity or low oil level causing sluggish VVT actuator response
30%
Failed or sticking intake VVT oil control valve (OCV) on Bank 1
20%
Sludge buildup in VVT actuator oil passages restricting oil flow
15%
Worn or damaged VVT phaser/actuator assembly on intake cam
5%
Stretched or jumped timing chain causing incorrect cam-to-crank relationship
Diagnostic Steps
1
Check engine oil level and condition; verify correct viscosity per manufacturer specification (typically 0W-20 or 5W-30)
2
Monitor intake camshaft position actual vs. desired angle using live data — deviation greater than 5 degrees at idle confirms the fault
3
Command the Bank 1 intake VVT solenoid on/off with a bidirectional scan tool and listen for actuator clicking; measure solenoid resistance (typically 6.9-7.9 ohms at 20°C)
4
Remove and inspect the VVT oil control valve for sludge, varnish, or stuck spool valve; clean with carburetor cleaner and retest
5
If solenoid tests good, perform an oil pressure test at the VVT feed port — minimum 10 PSI at idle indicates adequate supply
Estimated Repair Cost
$50 - $800
Parts + labor, varies by vehicle and location
The PCM has detected that the intake camshaft timing on Bank 1 is more advanced than commanded. This indicates the Variable Valve Timing (VVT) system is not responding correctly to the ECM's oil control valve commands. The over-advanced condition typically manifests at idle or low RPM where the cams...
The most common cause of P0011 ("A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)) is: Incorrect engine oil viscosity or low oil level causing sluggish VVT actuator response
Typical repair costs for P0011 range from $50 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is generally safe to drive short distances but may experience rough idle, reduced fuel economy, and potential stalling. Extended driving could cause increased emissions and possible catalytic converter damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0011 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing (VVT) System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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