P0011 Camshaft timing is over-advanced (bank 1)

Check this first

Check the engine oil level and when it was last changed – this code is often just dirty or low oil.

A rattle for a second or two on a cold start points at the phasers or chain rather than the oil.

What usually fixes it

In the order a good shop checks them. Typical total: $102–$2,200 at $130 an hour.

1. Oil change with the right grade

   $107–$218

   The cam phasers are moved by oil pressure, so old or low oil upsets them first.

2. Variable cam timing (VCT) solenoid

   $144–$342

   The screen clogs or the solenoid sticks, so the phaser can't hold its angle.

3. Cam phaser

   $668–$1,431

   Worn phasers rattle on a cold start and set this code.

4. Timing chain and tensioners

   $1,132–$2,200

   A stretched chain changes cam timing; usually noisy at idle.

Code titles are the generic SAE definitions. Prices are typical US parts and labor for a common car or light truck – a guide for judging a quote, not a quote. Always confirm a repair against the vehicle in front of you.