P0017 on Citroen: How to Diagnose & Fix
Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B
3 Citroen models · 4 documented issues · 4 critical · $500-$4,500 repair
P0017 on Citroen by model: symptoms, diagnosis and fix
PSA/Stellantis PureTech 1.2 (EB2) engines run an oil-immersed ("wet") timing belt instead of a chain. The belt's outer rubber layer can delaminate and shed particles into the oil pickup, clogging the strainer and starving the engine of oil. Stellantis revised the belt material and shortened the service interval (now 60,000 mi or 6 years, whichever first) but earlier-spec belts still in service are at risk.
Common Symptoms
- Rattling on cold start
- Engine warning light
- Misfires
- Power loss
How to Fix
Replace the timing chain, tensioner, and sprockets with revised parts. Check eligibility for PSA extended warranty (10 years/200,000km). Use only manufacturer-specified oil.
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 lubrication and vacuum systems are inspected Fitment/availability: Citroen C3 1.2 PureTech EB2DT or EB2DTS, retailer-listed 2014-2024, OE references 1611510180/1629080180; conf…
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The DS3 uses the PSA/BMW Prince engine family, which has the well-documented timing chain tensioner failure. The hydraulic tensioner loses pressure, allowing chain slack that leads to timing skip and potential engine destruction.
Common Symptoms
- Cold start rattle
- Engine warning light
- Rough running
- Loss of power
How to Fix
Replace the timing chain, tensioner, guides, and sprockets with revised parts. Use the correct 0W-30 oil specification. Check if the vehicle is covered by the extended warranty campaign.
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 DS3 EP6 branch Fitment/availability: Citroen DS3 1.6 EP6 petrol engine codes 5FD, 5FM, 5FN, 5FR, 5FT, 5FV, 5FX or 5GZ, retailer-listed 2010-2015; OE 0816.H9/V…
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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
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
P0017 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 P0017 mean on a Citroen?
P0017 stands for "Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B." This code means the engine computer has detected that the crankshaft and the Bank 1 'B' camshaft (typically the exhaust camshaft) are out of their proper timing relationship with each other. The computer compares the crankshaft position signal to the camshaft position signal, and when they don't line up within the allowed window, it sets this correlation code. This usually points to mechanical timing being off, most often from a stretched or worn timing chain, a slipped or stuck variable valve timing phaser, or a tensioner problem. You may notice rough running, low power, rattling at startup, or a no-start, and it should be addressed promptly to avoid valve-to-piston contact on some engines. On Citroen it is documented across 3 models: C3, DS3, C4.
What are the most common causes of P0017?
The most common causes of P0017 are: Stretched or worn timing chain, Worn or failed timing chain tensioner or guides, Stuck or faulty variable valve timing (VVT) cam phaser, Faulty VVT oil control/solenoid valve, Low or dirty engine oil affecting phaser operation, Faulty camshaft or crankshaft position sensor, Timing chain jumped a tooth or incorrect timing after service, Damaged reluctor (tone) ring. The specific cause varies by vehicle.
How much does it cost to fix P0017 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 P0017 on a different make?
View P0017 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.