P0016 on Saturn: How to Diagnose & Fix
Crankshaft/Camshaft Position Correlation - Bank 1 Sensor A
4 Saturn models · 5 documented issues · 5 critical · $600-$4,500 repair
P0016 on Saturn by model: symptoms, diagnosis and fix
The 3.6L 'High Feature' V6 used in the redesigned 2008-2010 Vue (and shared with Aura/Outlook/Acadia/CTS) is prone to timing chain stretch, often aggravated by extended oil-change intervals. As the chains and plastic guides wear, cam/crank timing drifts out of correlation, triggering the check-engine light, rough running, and a rattle on cold start. GM issued Information Bulletin 12-06-01-009F covering timing chain kit and guide replacement for DTCs P0008/P0009/P0016/P0017/P0018/P0019.
Common Symptoms
- Check engine light
- Rattle or rattling on cold start
- Rough idle / engine running rough
- Reduced power
- Timing correlation fault codes
How to Fix
Verify oil level and condition first; severely stretched chains require replacing the timing chains, tensioners, and guides as a complete set (often all three chains on this engine). Owners can reduce risk by using the correct dexos1-spec oil and changing it at conservative (e.g., ~5,000-mile) intervals rather than relying on the oil-life monitor's longer recommendations.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Cloyes 9-0753S complete three-chain timing set with sprockets
Variable-valve-timing sprockets/components, seals, gaskets, fluids and required one-time fasteners are not included; inspect and VIN-confirm those separately.
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Sources for this issue (3)
Early 2.2L Ecotec (L61) engines have a timing chain oiling deficiency: the oiler nozzle doesn't supply enough oil at low RPM, leading to chain stretch, worn plastic guides, and a weak original tensioner that loses tension. Because the Ecotec is an interference engine, a chain that jumps time or breaks causes pistons to strike valves, often resulting in catastrophic engine damage. GM revised the tensioner/oiler for 2005, after which the problem largely disappeared.
Common Symptoms
- Rattling or chain-slap noise, especially on cold startup
- Rough running or misfire if chain has jumped time
- Check engine light with camshaft/crankshaft correlation codes
- Engine won't start or runs very poorly after chain skips
How to Fix
Replace the timing chain, tensioner, and guides with the updated parts at the first sign of rattle, before the chain jumps time. Addressing a startup or cold rattle early prevents a destroyed engine. Maintaining clean oil and regular changes reduces wear.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Cloyes 9-4201S cam timing-chain kit with sprockets and oiler
Confirm VIN/engine and exact kit contents.
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Sources for this issue (3)
The GM 3.6L LY7/LLT "High Feature" V6 in 2007-2009 Saturn Aura XR (and shared Chevy Malibu / Pontiac G6 / Cadillac CTS) develops timing chain stretch typically by 80,000-150,000 miles. Same root cause family as the LLT in Enclave/LaCrosse/Acadia — extended oil intervals starve the chain.
Common Symptoms
- cold start rattle
- misfire
- check engine light
- reduced power
How to Fix
Full timing chain kit ($1,800-$3,000 at independent) including primary and secondary chains, all tensioners and guides. Switch to 5,000-7,500 mile dexos1 oil intervals. Catastrophic chain skip means cylinder head damage ($4,000+).
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Cloyes 9-0753S three-chain timing set
Variable-valve-timing components are not included; verify VIN, engine code, exact procedure, seals, bolts and ancillary parts before purchase. Professional engine-timing work.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
The early GM 3.6L high-feature V6 (used in Aura XR) is prone to premature timing chain stretch, sometimes appearing as early as 50,000-100,000 miles. As the chains wear, camshaft-to-crankshaft timing drifts out of spec, setting correlation codes and eventually causing rough running, reduced power, and potential engine damage if ignored. A cold-start rattle is a common early warning sign.
Common Symptoms
- Check engine light with timing correlation codes
- Rattle on cold start
- Rough idle / misfire
- Reduced power
- Engine light flashing under load
How to Fix
Replace all three timing chains, tensioners, and guides (a major job). GM issued Special Coverage Adjustment #11340 (extending warranty to 10 years/120,000 miles on affected engines and requiring ECM reprogramming in some cases). Use the correct oil and change intervals to slow wear.
Sources for this issue (3)
2008-2009 Saturn Astra is the Belgian-built Opel Astra H rebadged. The 1.8L Z18XER engine's water pump is driven from the timing chain — pump failure can jam the chain and bend valves. Common at 80,000-130,000 miles. Parts have become scarce in North America since Saturn / Opel withdrew.
Common Symptoms
- coolant weep
- whine from front of engine
- timing chain rattle
- misfire
How to Fix
Replace water pump WITH timing chain kit as preventive service ($1,200-$2,000 at independent specialist). Parts may need to be sourced through Opel/Vauxhall channels (UK, Germany). Catastrophic pump seize means head rebuild ($3,500+). Do not delay if there is any whining or coolant weep from the front of the engine.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Dayco WP338K1A timing-belt kit with water pump
2008-2009 Saturn Astra 1.8L Z18XER/U18XER only; verify VIN/engine and kit contents.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
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 Saturn?
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 Saturn it is documented across 4 models: Vue, Ion, Aura, Astra.
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 Saturn?
Published repair estimates on Saturn range from $600 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 P0016 on a different make?
View P0016 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.