A P0011 code means the intake camshaft timing on Bank 1 is more advanced than your engine computer expects. The same wording appears across many makes, but the causes and fixes vary, so start with the basic checks.
Low or dirty engine oil is a common trigger and the first thing to check. Get the car looked at soon, because sources disagree on how much driving is safe.
This page is general information, not a repair plan for your vehicle. Driving with this code can damage the engine, so check your owner manual or ask a qualified technician before you keep driving.
What P0011 Means
P0011 flags the “A” camshaft on Bank 1, the intake side, as over-advanced or not performing within its timing limits. The engine uses variable valve timing (VVT) to change when the intake valves open and close. Fixdapp notes the code applies only to engines with VVT or VCT systems, and Getclue says the intake valves open earlier than the engine computer’s target.
The official wording appears in Volkswagen’s technical bulletin as “A” Camshaft Position – Timing Over-Advanced or System Performance Bank 1. Subaru uses the same wording for several models in its own troubleshooting bulletin, so the code is not limited to one brand.
How the Code Is Set
Fixdapp describes the logic this way: the powertrain control module notices that camshaft timing is too far advanced and cannot correct the problem. The matching fault on the other camshaft of the same bank is covered in P0014 bank 1 camshaft over-advanced.
Common Causes of P0011
Getclue ranks low or dirty engine oil first among the causes of P0011, followed by faulty VVT parts and worn timing components. The main groups below appear across the repair sources.
- Low or dirty engine oil
- Faulty VVT solenoid or oil control valve
- Defective camshaft actuator, also called a phaser
- Faulty camshaft position sensor or damaged wiring
- Worn or stretched timing belt or timing chain
- Malfunctioning PCM or ECM, which is the rarest cause
Getclue also lists low oil pressure and internal engine wear. Related codes such as P0010, P0012 and P0016 point to similar cam and crank problems, and a scan should check for them too.
Oil and Lubrication
Engine oil supplies the pressure that moves the VVT actuator, so oil that is low, sludgy or the wrong viscosity can trigger P0011. Subaru’s bulletin lists oil level, oil condition and use of an undesignated viscosity as the first checks, before any parts are replaced.
Symptoms and Whether It Is Safe to Drive
Common symptoms include a check engine light, rough idle and hesitation when you accelerate. Sources disagree on whether short drives are safe, so the safest course is to avoid driving until the car is checked.
Getclue lists these symptoms for P0011:
- Check engine light
- Rough or unstable idle
- Sluggish acceleration or hesitation
- Hard starting or occasional stalling
- Rattling noise near the timing cover
- Poor fuel economy or a failed emissions test
Fixdapp says driving with the code can lead to catastrophic engine failure. Getclue says short, gentle drives are possibly safe, but prolonged use risks timing failure and engine damage.
How to Diagnose P0011 Step by Step
Check the engine oil first, then the VVT solenoid and camshaft sensor, following the order in Subaru’s troubleshooting bulletin. Work on a cool engine on level ground with the parking brake set.
- Park on level ground, turn the engine off, set the parking brake and let the engine cool.
- Check the oil level and condition. Fixdapp says the oil should be amber, not black or dark brown, and sludge or a low level calls for more inspection.
- Scan for P0011 and related codes such as P0010, P0012 and P0016.
- Inspect the VVT solenoid and camshaft sensor wiring for corrosion, loose connectors or damage.
- Test the solenoid’s resistance and response if you have the tools and the factory specifications.
- Check the timing components for slack, misalignment or stretch, and have a professional inspect the timing belt or chain.
Check the Oil First
Subaru’s chart asks you to correct the oil level, or replace the oil and filter if the oil is dirty or clotted from additives. Only after that step does the chart move to replacing the oil control valve with a new one.
Check the Sensors and Wiring
The same chart checks the harness between the oil control valve, cam angle sensor, crank angle sensor and the ECU for poor contact or damaged connector pins. Resistance above 1 ohm on those circuits points to a wiring fault that needs repair. Sensor pricing is covered in this camshaft sensor price guide. A weak crankshaft signal can disturb timing readings, which is covered in the guide to the crankshaft position sensor A circuit code.
Repair Options and When a Software Update Applies
The repair depends on the cause, and the diagnosis decides which part is replaced. Volkswagen’s bulletin for 2015 2.0L TDI models says to check valve timing first. If the timing is incorrect, adjust it by the repair manual. If the timing is correct, replace the camshaft positioner control valve.
Lexus handled a different case. Its 2014 bulletin covered 2013 to 2014 ES 300h models with the 2AR-FXE engine, and the repair was an engine control module reprogram. The bulletin states the ECM should not be replaced as part of that repair.
Software updates are model-specific, so check a bulletin for your exact year and engine before assuming one applies. Fixdapp lists camshaft actuator replacement, timing chain or belt service and a PCM or ECM update as the costlier repairs.
How Much a P0011 Fix Costs
Fixdapp, citing RepairPal figures retrieved in June 2024, lists shop totals from $58 for an oil change to $1,905 for a timing chain job. Treat these as 2024 estimates, because labor rates and parts prices change by region.
| Repair | Shop total (2024 estimate) |
|---|---|
| Engine oil and filter change | $58 to $235 |
| Camshaft position sensor | $176 to $227 |
| Oil control valve or VVT solenoid | $340 to $402 |
| Camshaft actuator or phaser | $755 to $875 |
| Timing belt | $603 to $785 |
| Timing chain | $1,604 to $1,905 |
| PCM or ECM | $1,006 to $1,075 |
Getclue gives a different set of estimates for 2025 without naming its source. It lists $150 to $500 for a VVT solenoid or sensor and $700 to $1,200 for a camshaft actuator. Compare both ranges with a written quote for your vehicle.
The cheapest first step is an oil and filter change. Getclue says most drivers resolve P0011 with an oil change or a new VVT solenoid, but that does not replace a proper diagnosis. Chain-driven engines carry bigger bills, as this timing chain job price guide shows.
Frequently Asked Questions
Is P0011 a serious code?
It can be. P0011 means the intake cam timing is off, and Fixdapp warns that driving with the code can cause catastrophic engine failure. Stop driving the car soon after the code appears, check the oil level, and have a technician test the timing system before you continue.
Can an oil change clear P0011?
Sometimes. If the oil is low, dirty or the wrong grade, changing it may resolve the fault. The code can return if the solenoid, sensor or wiring is faulty, so check the scan again after the repair.
Do I need a new ECM for P0011?
Not as a first step. Lexus says the engine control module should not be replaced in its repair procedure for 2013 to 2014 ES 300h models. For other vehicles, start with the oil, sensors and solenoid, and only then consider a module.
Does P0011 always mean a bad camshaft sensor?
No. The camshaft position sensor is one of several causes. Oil level, the VVT solenoid, wiring and timing parts can all set the code, so the sensor should be tested rather than replaced on a guess.
Is P0011 the same on every car?
The wording is common across makes, but causes and fixes differ by vehicle. Volkswagen, Subaru and Lexus bulletins point to different parts, so use the bulletin or repair manual for your exact model and year.
How do I clear P0011 after a fix?
Make the repair, then clear the stored code with a scan tool and complete a full drive cycle. If the code returns, the cause was not fixed, so check the oil, wiring and solenoid again before replacing more parts.
If the check engine light comes on with this code, get the car checked before more driving. Start with the oil, because it costs the least and Getclue ranks it as the top cause. Keep the scan codes and repair receipts to show your technician.
