P0017 on Jaguar: How to Diagnose & Fix
Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B
4 Jaguar models · 4 documented issues · 4 critical · $3,500-$9,000 repair
P0017 on Jaguar by model: symptoms, diagnosis and fix
The Jaguar AJ-V8 engines in the XF suffer from timing chain tensioner and tensioner-lever wear, causing chain slack on cold starts. On the 5.0L, wear on the timing chain tensioner lever reduces chain tension and allows the chain to rattle, and prolonged neglect leads to stretched chains and jumped timing, risking catastrophic valve-to-piston contact.
Common Symptoms
- Rattling noise on cold start lasting several seconds
- Check engine light with cam timing codes
- Rough idle on cold start
- Progressive worsening of rattle over months
How to Fix
Replace the timing chain tensioners and tensioner levers. On the 5.0L V8, JLR's bulletin for the same engine in Land Rover models specifies two tensioners and two tensioner levers, with roughly 8-9 hours of labor; inspect the chains and replace them if stretched. Use updated JLR tensioner part numbers. Do not delay once cold-start rattle is observed.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- HTK200 complete timing-chain kit for the 2009 4.2L XF branchOEMHTK200
Confirmed chain, guide or tensioner failure on a 2009 XF 4.2L naturally aspirated or supercharged engine Fitment/availability: HTK200 is the later AJ-V8 chain/guide/tensioner kit and its application family includes the 4.2L components us…
- GTCK8003 complete 8 mm AJ133 timing-chain kitOEMGTCK8003
Confirmed timing-drive wear on a 2010-2015 XF 5.0L physically/VIN confirmed to use the 8 mm INA chain system Fitment/availability: GTCK8003 lists XF 5.0L 2009-2015 and contains 8 mm chains, auxiliary chain, guides, tensioners and crank s…
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Owner tips & cautions
- WarningDo not ignore cold-start rattle. Once the chain jumps, expect $10,000+ in engine damage or a full engine replacement. Budget $5,000-$8,000 for preventive replacement at a specialist.
Sources for this issue (1)
The AJ-V8 engine in the XK shares the same timing chain tensioner weakness found across the Jaguar V8 range. The tensioners and their plastic-faced tensioner blades wear, letting chain tension drop so the timing chains rattle on startup and the problem worsens until timing is compromised.
Common Symptoms
- Rattling on cold start for several seconds
- Check engine light with cam timing codes
- Rough idle on startup
- Progressively louder and longer rattle over months
How to Fix
Replace all timing chain tensioners, chains, and guides with updated JLR parts. On the XK, access is achieved by removing the front cover with the engine in-frame. Budget 25+ hours labor. Use updated part numbers for improved tensioner oil retention.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- HTK200 complete later AJ-V8 timing-chain kit for the 4.2L XK/XKR branchOEMHTK200
Confirmed timing-chain, guide or tensioner wear on a 2007-2009 XK/XKR 4.2L Fitment/availability: HTK200 is the later AJ-V8 chain/guide/tensioner family and lists XK/XKR applications. Confirm 4.2L engine, VIN and complete kit contents wit…
- GTCK8003 complete 8 mm AJ133 timing-chain kitOEMGTCK8003 / C2Z20573 / C2Z22078
Confirmed timing-drive wear on a 2009-2014 XK 5.0L physically or by VIN verified to use the 8 mm INA chain system Fitment/availability: GTCK8003 explicitly lists XK 5.0L 2009-2014, naturally aspirated and supercharged AJ133, and contains…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- WarningAny cold-start rattle on the XK V8 should be treated as urgent. These engines are expensive to rebuild and the damage from jumped timing is catastrophic.
Sources for this issue (1)
The early AJ-V8 engines in the S-TYPE have timing chain tensioners that fail prematurely, producing a characteristic cold-start rattle. The original tensioners have plastic housings that become brittle and crack with age, allowing chain slack that wears the guides and can let the chain jump teeth and cause valve-to-piston contact.
Common Symptoms
- Rattling on cold start lasting several seconds
- Rattle duration increases over months
- Check engine light for cam timing codes
- Rough running on cold start
How to Fix
Replace the timing chain tensioners, chains, and guides. On the S-TYPE, the engine does not need to come out but front-end disassembly is extensive. Use updated tensioner part numbers. Budget 18-24 hours of labor.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- HTK100 complete updated timing-chain kit for the early 4.0L AJ-V8 branchOEMHTK100
Confirmed chain, guide or early plastic upper-tensioner failure on a 2000 through July 2001 S-TYPE 4.0L Fitment/availability: HTK100 explicitly covers Jaguar S-TYPE 4.0L 2000 through 07/2001 and includes four chains, updated metal-body u…
- HTK200 complete timing-chain kit for the later 4.0L and 4.2L AJ-V8 branchOEMHTK200
Confirmed timing-chain, guide or tensioner failure on the post-July-2001 4.0L or 2003-2008 4.2L S-TYPE, including S-TYPE R Fitment/availability: HTK200 explicitly lists S-TYPE 4.0L from 08/2001 through 2002 and 4.2L including R from 2003…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- WarningThe S-TYPE V8 timing chain job costs more than many of these cars are worth. Factor this into your purchase price or walk away from one with cold-start rattle.
Sources for this issue (3)
The 5.0-litre AJ133 V8 fitted to the X351 has a widely documented timing drive weakness. The hydraulic tensioner's hardened steel plunger bears against a guide rail with a soft aluminium core and a plastic wear face. The plunger cuts a groove into that face; the ratchet that is supposed to hold tension with the engine off then cannot, and the chain slaps on start-up before oil pressure builds. There are no fault codes at the rattle stage, which is exactly why it gets ignored. Left alone, the chain can jump a tooth — giving a restricted-performance warning and misfire codes — or break, which on this interference engine destroys it. Jaguar Land Rover revised the timing components progressively, with the setup substantially reworked by around 2015-2016, so late facelift cars are lower risk than early ones.
Common Symptoms
- Rattle from the front of the engine for a few seconds on cold start-up
- Rattle that disappears once oil pressure comes up
- 'Restricted Performance' warning message
- Rough running or misfire after the chain jumps a tooth
- Check engine light with misfire or camshaft correlation codes
- Complete engine failure without warning in advanced cases
How to Fix
Treat cold-start rattle as urgent and replace chains, tensioners and guides as a complete drive service; verify the exact engine and production revision before ordering.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- AJ133 timing-chain kit for Jaguar XJ/XJR X351$124
2010-present listing for Jaguar XJ/XJR X351 with AJ133; use only for the issue's 2010-2015 5.0L AJ133 branch after VIN and engine verification.
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 (4)
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 Jaguar?
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 Jaguar it is documented across 4 models: XF, XK, S-TYPE, XJ.
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 Jaguar?
Published repair estimates on Jaguar range from $3,500 to $9,000 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.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.