P0011 on Citroen: How to Diagnose & Fix
Intake Camshaft Position Timing - Over-Advanced (Bank 1)
1 Citroen model · 2 documented issues · 2 critical · $500-$4,500 repair
P0011 on Citroen by model: symptoms, diagnosis and fix
The EP6 'Prince' 1.6 THP turbo petrol engine (co-developed with BMW) fitted to the C4 from 2008 suffers from timing chain stretch combined with a weak hydraulic tensioner — on pre-2016 engines the chain frequently shows stretch by 60,000-100,000 km. Once stretched, the tensioner can reach its travel limit; if oil pressure drops at idle the chain can jump teeth, throwing cam timing out and in severe cases causing valve-to-piston contact and major engine damage.
Common Symptoms
- Metallic 'diesel-like' rattle for a few seconds at cold start
- Engine management light with camshaft timing fault codes
- Rough idle
- Loss of power or hesitation
- Engine running noisier than usual at idle
How to Fix
Replace the timing chain, tensioner and guides with the latest updated parts at the first sign of cold-start rattle, then verify camshaft timing with a diagnostic tool. Keeping the oil level correct and shortening oil-change intervals significantly extends chain life.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- FAI TCK118NG EP6 timing-chain kit
replace a measured stretched chain or failed tensioner/guide set on the listed EP6 branch Fitment/availability: Citroen C4 1.6 EP6 petrol engine codes 5FD, 5FM, 5FN, 5FR, 5FT, 5FV, 5FX or 5GZ, retailer-listed 2008-2021; OE 0816.H9/V86183…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (5)
- Timing chain problems — C4-DS4 Owners forumforum
- All Real and Contrived Peugeot Citroen Engine Problems — eng-repair.com (EP6 chain stretch pre-2016)article
- THP timing chain question — Peugeot Forumsforum
- Citroën 1.6 THP EP6DT specs, problems, reliability — selectedworld.com (lists C4; chain stretch and tensioner wear)article
- Solving rattling noise problem on Peugeot/Citroen EP6 engine (tensioner replacement) — nomaallim.comarticle
The EB2 1.2 PureTech three-cylinder petrol engine uses a timing belt that runs inside the engine immersed in oil (a 'wet belt'). Oil contamination from fuel dilution and long service intervals degrades the belt prematurely, and shed rubber debris clogs the oil pump pickup strainer and the brake vacuum pump, causing low oil pressure, loss of brake assistance and, in the worst cases, complete engine failure. PSA/Stellantis issued recalls for 2017-2018 builds and in 2024 opened a compensation scheme that explicitly lists the Citroen C4 among affected models.
Common Symptoms
- Engine management or oil pressure warning light
- Rough running or misfires
- Hard brake pedal / loss of brake assistance
- Excessive oil consumption
- Black rubber debris visible under the oil filler cap or in the filter
How to Fix
Replace the wet belt (plus oil pickup strainer clean and vacuum pump check) well before the original schedule — Stellantis cut the interval to roughly 6 years/100,000 km, and many specialists advise even sooner. Owners who paid for belt failures or excessive oil consumption between 2022 and 2024 can claim via the Stellantis PureTech compensation platform; from 2023 the engine was redesigned with a timing chain.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Dayco TBK989 wet timing-belt kit for EB2DT/EB2DTS 1.2 PureTech
replace a due or degraded oil-immersed timing belt after the pickup, vacuum pump and lubrication circuit are assessed Fitment/availability: Citroen C4 1.2 PureTech EB2DT or EB2DTS, retailer-listed 2014-2024, OE 1611510180/1629080180; con…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (6)
- Parkers — Stellantis wet belt compensation scheme (lists Citroen C4 2021-)article
- Stellantis — PureTech Compensation Platform (official, timing belt premature degradation)manufacturer
- 1Stop Motor Shop — Wet Belt Trouble on Citroen C4 (real failure case: belt debris blocking oil galleries)article
- Wheelbase Garage — 1.2 PureTech Wet Timing Belt guide (engine-level: delamination, 2021 recall)article
- Used Car Hero — PureTech wet belt low-oil-pressure warning and recall guidearticle
- Peugeot Forums — Timing Belt Issues and Recalls (PureTech wet belt, 2017-2018 models)forum
P0011 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0011 mean on a Citroen?
P0011 stands for "Intake Camshaft Position Timing - Over-Advanced (Bank 1)." P0011 means the engine computer detected that the intake camshaft timing on Bank 1 is more advanced than it should be — the variable valve timing system is either over-advancing the cam or not responding correctly to commands. Modern engines use a camshaft actuator, controlled by an oil-fed solenoid, to vary valve timing for better power and efficiency. When the actual cam position stays more advanced than the computer commands (or won't move back), this code is set. It generally indicates a fault in the variable valve timing system and can cause rough idle, reduced performance, or poor fuel economy. On Citroen it is documented across 1 model: C4.
What are the most common causes of P0011?
The most common causes of P0011 are: Stuck or faulty camshaft (VVT) oil control valve / solenoid, Low or dirty engine oil restricting actuator movement, Clogged oil control valve screen or oil passages, Faulty camshaft phaser / actuator stuck advanced, Wrong oil viscosity or overdue oil change, Wiring or connector fault to the VVT solenoid, Faulty camshaft position sensor. The specific cause varies by vehicle.
How much does it cost to fix P0011 on a Citroen?
Published repair estimates on Citroen range from $500 to $4,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0011 on a different make?
View P0011 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.