Nissan P0011

Intake cam over-advanced on Nissan — MR20DE/QR25DE/VQ35DE timing chain stretch and OCV faults are the headline causes.

Nissan P0011 — Intake cam over-advanced on Nissan — MR20DE/QR25DE/VQ35DE timing chain stretch and OCV faults are the headline causes. Typical UK independent garage cost: £140–£1800.

What actually causes P0011 on a Nissan

Nissan MR20 and QR25 engines suffer from timing chain stretch around 90,000–120,000 miles, and the variable valve timing system can't compensate. P0011 stores alongside a cold-start chain rattle. The intake OCV (oil control valve) also clogs with sludge from extended service intervals — that's the cheaper repair to attempt first.

Nissan engines that log P0011

• MR20DE 2.0 (Qashqai, X-Trail, Note)
• QR25DE 2.5 (X-Trail, Qashqai+2)
• VQ35DE 3.5 V6 (350Z, Murano)
• HR16DE 1.6 (Juke, Note, Micra)

How we diagnose P0011 on a Nissan

1. Cold-start engine — listen for chain rattle (rules in chain stretch if 3+ seconds)
2. Scan tool: read cam advance error at warm idle
3. Remove intake OCV, clean filter screen and test electrically
4. If rattle present and OCV clean, plan full chain kit (chain, guides, tensioner)
5. Check service history — Nissan CVT-equipped cars often neglect engine oil changes

The common misdiagnosis to avoid

Don't accept a timing chain quote on a Qashqai under 80k without a proper OCV inspection — a £45 solenoid clean and fresh oil cures many cases.

Nissan P0011 repair cost in the UK

Expect £140–£1800 including parts and labour at an independent garage. Main-dealer quotes on Nissan are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.

Bob's workshop tip

On Qashqai with CVT, owners forget the engine oil because they're focused on CVT fluid — short oil intervals (6,000 miles) keep MR20 VVT healthy and prevent P0011 entirely.

Codes usually seen alongside P0011 on Nissan

• P0014
• P0021
• P0341

Symptoms drivers report with P0011

• Engine rattles like a 'bag of nails' for 3 seconds on a cold start.
• The car felt fine on the motorway, but now it stalls every time I stop at a roundabout.
• Noticeable 'flat spot' or hesitation when trying to overtake in 3rd gear.
• Lumpy, hunting idle that makes the gearstick vibrate.
• Fuel economy has tanked—getting about 10mpg less than usual.

Repairs that clear P0011

• Engine flush and oil change
• Replace VVT solenoid
• Replace cam phaser if needed

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0011 guide.

Reading P0011 on a Nissan properly

A generic reader will show P0011 and nothing else. What matters is the freeze-frame data stored with it — engine speed, load, coolant temperature and fuel trims at the moment the fault was logged — plus whether any other module on the Nissan has logged something at the same time. Codes rarely arrive alone, and the order they were stored in usually points at which one is the cause and which are the consequences.

Clearing P0011 without fixing it

Erasing the code resets the Nissan's readiness monitors as well as the light. The fault returns on the next drive cycle if the cause is still there, and in the meantime the incomplete monitors can stop the car passing an emissions check. After a genuine repair, the car is driven until the relevant monitor completes before it is handed back.

Bob's Mechanical Repairs is an independent garage in Birnam, Dunkeld, Perthshire, with 32 years of Bob's experience on the tools. If P0011 is showing on your Nissan, bring any scan results with you — we will read the live data ourselves, confirm which cause it actually is, and price the repair before any work starts.