P0016 on Toyota: How to Diagnose & Fix
Crankshaft/Camshaft Position Correlation - Bank 1 Sensor A
4 Toyota models · 7 documented issues · 1 critical · $80-$2,500 repair
P0016 on Toyota by model: symptoms, diagnosis and fix
Chain-driven 1ZZ-FE (and early 2ZR-FE) Corollas commonly develop a brief rattle/chatter from the timing-chain area for the first few seconds after a cold start. The hydraulic chain tensioner relies on oil pressure to take up slack; with age, sludge/varnish buildup in the tensioner or a worn tensioner/guides lets the chain slap until oil pressure builds. It is a heavily discussed issue on owner forums (ToyotaNation, BobIsTheOilGuy, CorollaForum). Usually it's a benign-but-annoying noise, but a badly worn tensioner/guides can eventually let the chain wear the cover or, in severe cases, jump timing.
Common Symptoms
- Rattle/chatter from front of engine for a few seconds at cold start
- Light top-end ticking that quiets once oil pressure builds
- Chain noise that worsens with low or old oil
- Rattle on quick throttle blips at idle
How to Fix
Maintain strict oil-change intervals with correct-viscosity oil (low oil level/pressure worsens the rattle). The community-recommended fix is to replace the hydraulic timing-chain tensioner first (it unbolts from the side of the timing cover near the firewall and is a relatively easy job); if noise persists, replace the chain and guides as a kit. Use OEM-quality parts — some aftermarket tensioners fit poorly. Cleaning sludge from a gummed-up tensioner can also resolve mild cases.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Toyota 13540-0D010 genuine 1ZZ-FE timing-chain tensioner assembly
confirmed leaking, sticking or mechanically failed 1ZZ tensioner after noise and chain diagnosis Fitment/availability: 1998-2008 Corolla 1ZZ-FE branch with catalog engine-number note 5001001-9XXXXXX or CXXXXXX; page supersedes 13540-2202…
- Toyota 13540-0T020 genuine 2ZR timing-chain tensioner assembly
confirmed failed 2ZR chain tensioner on the matching production branch Fitment/availability: 2009-2012 Corolla 2ZR-FE production branch marked (L); select by VIN, production origin and installed number and do not substitute for the cam-g…
- Toyota 13540-0H010 genuine chain-tensioner assembly
confirmed failed tensioner on the matching alternative production branch Fitment/availability: 2009-2012 Corolla catalog alternative branch within this issue; confirm 2ZR-FE, VIN, production origin and installed number because the listin…
- Toyota 13050-0T050 genuine camshaft timing gear assembly
bulletin-matching professional repair for brief cold-start knock/rattle; obtain all bulletin-specified gaskets and sealant separately by VIN Fitment/availability: 2009-2010 Corolla 2ZR-FE vehicles matching Toyota T-SB-0087-09 Rev1 after …
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Sources for this issue (3)
The VVT-i camshaft timing oil control valve (OCV/spool valve, PN 15330-22030 on 1ZZ-FE) sticks or clogs with oil varnish on high-mileage Corollas, so the intake cam phaser can no longer be controlled. This sets P0011 'A Camshaft Position Timing Over-Advanced (Bank 1)' (or P0010/P0016) and can cause rough idle, hesitation and a rattle at start. Low or dirty engine oil, and the small OCV filter screen clogging, are the usual root causes.
Common Symptoms
- Check engine light with P0011
- Rough or unstable idle
- Hesitation or reduced power
- Start-up rattle from cam phaser
How to Fix
Check engine oil level/condition first (VVT faults often stem from low or degraded oil). Remove the camshaft timing oil control valve, clean the OCV and its filter screen; if the plunger is sticky or the solenoid fails a resistance/actuation test, replace it. OEM PN 15330-22030 (fits 2000-2008 Corolla 1ZZ-FE; also Celica/Matrix/MR2), roughly $50-90; Denso/Standard aftermarket cross-references available. This part number is for the 1ZZ-FE only; for 2009-2010 models with the 2ZR-FE, confirm the correct valve for your VIN before ordering. Clear codes and verify cam timing response after replacement.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Toyota 15330-22050 genuine 1ZZ-FE cam timing oil-control valve
failed or persistently sticking intake OCV after oil, circuit, command and mechanical-timing diagnosis Fitment/availability: 2000-2008 Corolla 1ZZ-FE branch within this issue; current supersession for 15330-22030/22010, with VIN and inst…
- Toyota 15678-21010 genuine oil-control-valve filter screen
replace a damaged or contaminated screen after inspection and correction of the underlying oil/sludge condition Fitment/availability: 2000-2008 Corolla 1ZZ-FE catalog branch; do not apply to the 2009-2010 2ZR branch without its separate …
- Toyota 15330-0T010 genuine 2ZR-FE intake cam timing oil-control valve
failed intake OCV after oil, electrical, commanded-response and mechanical timing checks Fitment/availability: 2009-2010 Corolla 2ZR-FE No.1/intake OCV branch, current supersession for 15330-37010; confirm VIN, production origin, engine …
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 (2)
Toyota T-SB-0269-10 applies to certain 2005-2007 Camry vehicles equipped with the 2AZ-FE and built before the VIN cutoffs listed in the bulletin. The covered condition is MIL illumination with P0011, P0012 or P0016; Toyota says the VVT-i actuator may be the cause in some cases and supplies a test to verify actuator operation. It applies only to 2AZ-FE Camrys, and a code alone does not confirm which part has failed.
Common Symptoms
- Malfunction indicator lamp illuminated with P0011, P0012 or P0016
How to Fix
Confirm model year, 2AZ-FE application and the production/VIN cutoff in the current Toyota bulletin. Preserve freeze-frame data, verify oil level/condition and follow the repair-manual circuit and mechanical checks. Use T-SB-0269-10's Techstream VVT Control active test to determine whether the bulletin repair applies; replace the camshaft timing gear assembly only when the actuator fails Toyota's test. Do not clean or replace the oil-control valve, open the timing system or order parts based on the code alone.
Owner tips & cautions
- TipRecord all stored/pending codes and freeze-frame data before clearing them; T-SB-0269-10 uses exact vehicle and actuator-test gates rather than treating P0011 as a part number.
- WarningThe bulletin is limited to certain pre-production-change 2005-2007 2AZ-FE Camrys. Do not apply its camshaft timing gear repair to 2AR-FE or A25A-FKS engines.
Sources for this issue (1)
Toyota T-SB-0041-13 Rev1 covers certain 2010-2012 Camry vehicles equipped with the 2AR-FE and within the VIN ranges the bulletin lists. The condition is a brief knock or rattle, approximately one second, immediately after a cold-soak startup. Toyota's repair is replacement of the intake camshaft timing gear assembly after confirming applicability. The bulletin does not tie this noise to P0016 or P0012 codes.
Common Symptoms
- Brief knock or rattle for approximately one second immediately after a cold-soak startup
How to Fix
Reproduce and record the brief noise after a true cold soak, then verify the engine and VIN against the current Toyota bulletin. Rule out oil level/grade, extended cranking and other engine or accessory noises. Apply T-SB-0041-13 Rev1 only when both the vehicle and the symptom match the bulletin; the timing-system repair is a technician procedure. Diagnose any stored P0016/P0012 separately under the repair manual rather than using this bulletin as proof of a broken phaser.
Owner tips & cautions
- TipCapture the first cold-soak start on video and note duration; the Toyota bulletin describes an approximately one-second knock/rattle immediately after startup.
- WarningDo not use P0016 or P0012 alone to invoke this bulletin. Confirm 2AR-FE, WMI, VDS, production VIN and the exact cold-start symptom first.
Sources for this issue (1)
The 2UZ-FE 4.7L V8 uses a timing belt that must be replaced at 90,000-mile intervals. The hydraulic timing belt tensioner and idler pulleys are critical failure points — if the tensioner fails, the timing belt can slip or break, potentially causing valve-to-piston contact on this interference engine. The water pump is driven by the timing belt and commonly leaks at the same mileage interval. Since the labor to access the timing belt is 6-8 hours, all components (belt, tensioner, idler pulleys, water pump) should be replaced together as a comprehensive timing belt service.
Common Symptoms
- Squealing or chirping noise from timing belt area
- Coolant leak from water pump weep hole
- Timing belt showing cracks or wear on inspection
- Rough idle or engine timing issues
How to Fix
Perform a comprehensive timing belt service every 90,000 miles, replacing the timing belt, hydraulic tensioner, both idler pulleys, and water pump together. A complete timing belt kit with water pump costs $250-$500 for parts. Labor is 6-8 hours ($600-$1,200) due to the tight engine bay and need to remove accessories for access. Use OEM Toyota or Aisin (OEM supplier) components only — aftermarket timing belts and tensioners have higher failure rates on this engine. Always replace the thermostat and coolant while the system is apart. Total cost: $1,000-$1,800 at an independent shop, $1,500-$2,500 at the dealer.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- AISIN TKT-021 complete 2UZ-FE timing-belt and water-pump kit
matched belt, water pump, hydraulic tensioner, tensioner bearing and idler bearing service kit Fitment/availability: 1998-2007 Toyota Land Cruiser 4.7L 2UZ-FE; confirm VIN and that the complete kit contents match the existing production …
- AISIN SKT-001 timing-cover/front seal kit
condition-based front seal/gasket branch when inspection shows leakage during timing service Fitment/availability: Vehicle-selector-confirmed 2UZ-FE Land Cruiser timing-cover application; confirm VIN before purchase Fitment/availability:…
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
- WarningDo NOT skip or delay the 90,000-mile timing belt service. The 2UZ-FE is an interference engine — if the belt breaks, valves hit pistons and you are looking at a $5,000-$8,000 engine rebuild. This is the single most important maintenance item on the 100-series.
- TipAlways replace the water pump with the timing belt. The pump costs $60-$100 extra and the labor is already done. A water pump failure between timing belt services means paying for the full labor again.
Sources for this issue (2)
The 1998-1999 100-series (UZJ100) switched to the 4.7L 2UZ-FE V8, which uses a rubber timing belt on a ~90,000-mile replacement interval. The timing-belt-driven water pump, the hydraulic tensioner, and the idler pulleys are the common failure points and are typically leaking or worn by that interval (water-pump failure often precedes belt wear). There is a long-running interference vs. non-interference debate: Toyota officially lists it as interference, but the community consensus (and documented belt breaks on the early non-VVT-i 2UZ-FE) is that it generally does not bend valves when a belt snaps at low RPM. Regardless, a broken belt strands the vehicle, and careless belt jobs can nick the crank sensor reluctor wheel or pinch/route wiring wrong, causing no-start or timing DTCs.
Common Symptoms
- Coolant leak from front of engine (water pump)
- Squeal or rattle from timing cover area
- Belt due/overdue by mileage or age
- No-start or rough running after a prior belt job (sensor/wiring damage)
How to Fix
Replace the timing belt as a complete kit at ~90k-mile intervals: belt, hydraulic tensioner, idler/tensioner pulleys, and the timing-belt-driven water pump (Aisin/OEM), plus front crank/cam seals while apart. Take care not to damage the crankshaft position sensor reluctor wheel and route the crank-sensor/oil-sender harness to avoid belt chafe. This is a 6-8 hour labor job, so doing all wear items at once is standard practice.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- AISIN TKT-021 2UZ-FE timing-belt and water-pump kit
matched timing belt, water pump, tensioner and idler service kit Fitment/availability: 1998-1999 Toyota Land Cruiser 4.7L 2UZ-FE within this issue; seller lists 1998-2007 Land Cruiser coverage Fitment/availability: Live US direct product…
- AISIN SKT-001 timing-cover seal kit
condition-based front seal set while timing components are removed Fitment/availability: Vehicle-fitment-confirmed 1998-1999 Land Cruiser 2UZ-FE; kit contains front crank and two cam seals plus timing-cover seal components Fitment/availa…
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 (3)
P0016 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 P0016 mean on a Toyota?
P0016 stands for "Crankshaft/Camshaft Position Correlation - Bank 1 Sensor A." P0016 means the engine computer found that the crankshaft and camshaft position sensors on Bank 1 (Sensor A) are not lining up the way they should — the timing 'correlation' between them is out of range. These two sensors tell the computer where the pistons and valves are so it can time fuel injection and spark precisely. When their signals don't agree within tolerance, the computer sets this code. It generally indicates an engine timing issue, which may be a worn timing chain, a sticking variable valve timing component, or a sensor problem, and can cause rough running, hard starting, or potential engine damage if ignored. On Toyota it is documented across 4 models: Corolla, Camry, Land Cruiser, Tundra.
What are the most common causes of P0016?
The most common causes of P0016 are: Stretched timing chain or worn timing components (guides/tensioner), Faulty camshaft position sensor or crankshaft position sensor, Stuck or faulty variable valve timing (VVT/VCT) actuator or solenoid, Low or dirty engine oil affecting the VVT actuator, Clogged oil control valve or restricted oil passages, Timing chain/belt installed one tooth off after service, Damaged reluctor/tone ring on the crankshaft or camshaft, Wiring or connector faults at the position sensors. The specific cause varies by vehicle.
How much does it cost to fix P0016 on a Toyota?
Published repair estimates on Toyota range from $80 to $2,500 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.
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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.