Is the P0017 fault code caused by a skipped tooth?

[DelJohnny]

P0017 fault code does not necessarily mean a skipped tooth. The P0017 fault code indicates an unreasonable correlation between the crankshaft position and the exhaust camshaft position. There are multiple causes for this fault code, and a skipped tooth is just one of them. Causes of the P0017 fault code: 1. Abnormal oil pressure; 2. Stuck VVT solenoid valve; 3. Faulty VVT actuator; 4. Chain skipped tooth or tensioner pressure loss; 5. Faulty camshaft and crankshaft position sensors or signal disc; 6. Damaged ECU. Solutions for the P0017 fault code: 1. Check if the crankshaft position signal disc is dirty or damaged, and clean or replace it if necessary; 2. Swap the intake and exhaust VVT solenoid valves and camshaft sensors; 3. Remove the timing chain and replace both VVT gears.

[SanMaximus]

I often see this question on car forums. The P0017 trouble code could indeed be caused by skipped teeth, as it indicates a synchronization issue between the camshaft and crankshaft, which is common when timing chains or belts skip teeth—especially in older cars where the chain has loosened or the belt teeth are worn. But don't panic just yet; it might not necessarily be skipped teeth. A faulty sensor or loose wiring can sometimes trigger this code too. I once encountered a car where the issue turned out to be just a rusty camper position sensor connector—cleaning it cleared the code. Overall, skipped teeth are more likely, so if you spot this code, I recommend checking the timing system right away to avoid bigger problems. Regular chain maintenance can prevent a lot of headaches, especially for cars that frequently go on long trips. Safety first—engine trouble is no joke, so I’d advise getting it sorted at a professional shop ASAP.

[Damien]

As a seasoned mechanic with years of experience, I can tell you that the P0017 trouble code doesn't directly equate to timing chain jump. It's more of an alarm indicating camshaft and crankshaft signal mismatch. Common causes include timing chain jump, which is prone to occur in worn-out vehicles. However, in my experience, sensor failures or circuit issues account for the majority of cases, such as short circuits or inaccurate readings due to aging sensors. When diagnosing, don't jump to conclusions. First, use an OBD tool to check the deviation values. Small deviations may indicate electrical faults, while large ones are more likely mechanical issues like chain jump. If the timing chain has jumped, the engine will run unevenly, exhibit poor acceleration, and produce abnormal noises. I once neglected such a case and nearly destroyed an engine, so take it seriously. Start by clearing the code and test driving. If the issue persists, conduct a comprehensive inspection of the fuel system and timing components.

[VanJoseph]

I just experienced this issue where the car showed a P0017 code. I was worried it was a timing jump, but the mechanic said the VVT system was stuck and just needed cleaning to fix it. Timing jump is indeed a cause, often occurring when there's a problem with the timing belt or chain. A stretched chain due to aging can easily skip a tooth or two, causing misalignment between the camshaft and crankshaft. But don't just think about timing jumps—sensor issues or engine control module failures can also trigger this, especially when wiring gets damp on rainy days. My car is ten years old, so chain inspection is crucial. After a timing jump, power drops and unusual noises become obvious, so it's important to fix it promptly to avoid breaking down on the highway, which is dangerous. A small tip: always use high-quality engine oil to protect the timing system.