P0017: Crankshaft to Camshaft Correlation (Bank 1 Sensor B)

P0017: Crankshaft to Camshaft Correlation (Bank 1 Sensor B)

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P0017: Crankshaft to Camshaft Correlation Issues You Can't Ignore

Look - OBD2 code P0017 indicates a problem with the correlation between the crankshaft and the camshaft on Bank 1 Sensor B. This isn't just a random code; it points to serious timing issues that can lead to poor engine performance, excessive fuel consumption, and even catastrophic engine damage if not addressed promptly. Ignoring this code could cost you more than just parts—think about labor and long-term damage.

Before diving into diagnostics, it's crucial to understand what this code isn't. It's not just a simple sensor failure. While it can be caused by a faulty sensor or wiring, it often points to timing chain/belt issues, variable valve timing (VVT) malfunctions, or even oil flow problems affecting the VVT system.

Symptoms

  • Check Engine Light is illuminated
  • Rough idle or stalling
  • Decreased engine power and acceleration
  • Poor fuel economy
  • Unusual engine noises
  • Engine misfires
  • Vibrations during acceleration
  • Increased emissions

Diagnostic order

  1. Check for other codes using an OBD2 scanner. Look for related codes like P0016 or P0018.
  2. Inspect the camshaft and crankshaft sensors for physical damage or dirt. Resistance should be between 200 to 1,500 ohms.
  3. Examine the wiring and connectors for shorts or corrosion.
  4. Check engine oil level and quality. Low oil pressure can cause VVT issues.
  5. Verify the timing chain/belt alignment; it should coincide with manufacturer specifications.

Common questions

What causes P0017?

P0017 is typically caused by timing issues between the crankshaft and camshaft, often due to a stretched timing chain or a malfunctioning VVT system.

Can I drive with P0017?

Technically, yes, but it’s not advisable. The engine can suffer further damage, and performance will be compromised.

How much does it cost to fix P0017?

Repairs can range from $200 to over $1,500 depending on whether you need a new timing chain, sensors, or extensive labor.

What does it mean if I have P0017 and P0016?

Having both codes usually indicates a more severe timing issue and should be diagnosed immediately.

Can oil changes affect P0017?

Yes, dirty or low oil can affect VVT operation, leading to timing discrepancies.

Is this a common problem in certain vehicles?

Yes, vehicles with variable valve timing systems, like the Ford EcoBoost engines or GM 3.6 LFX, are more susceptible.

How do I reset the code?

You can reset the code with an OBD2 scanner, but if the underlying issue isn't fixed, it will return.

Should I replace the camshaft sensor?

Not without diagnosing the entire system first. It might not be the root cause of the problem.

Vehicle-specific notes

  • Ford EcoBoost 2.0L: Monitor the VVT solenoid; they can clog easily.
  • Honda K-series 2.4L: Timing chain tensioners are known to fail, leading to P0017.
  • Toyota 2GR-FE V6: Check the oil flow to the VVT controller; low pressure can trigger this code.
  • GM 3.6 LFX: Timing chain wear is a common culprit; inspect for slack.
  • Hyundai Theta II 2.0L: Ensure the VVT solenoid is functioning properly; they often fail.
  • BMW N55: Verify the timing chain; they can stretch and throw off the timing.
  • Nissan VQ35: Oil sludge can impact VVT performance; keep up with oil changes.
  • Subaru EJ20: Check the camshaft timing; they can slip if the belt is worn.
  • Ram Cummins 6.7L: Timing issues can lead to misfires; inspect the timing chain.
  • Ford 6.7 Powerstroke: VVT issues can cause performance drops; check oil levels and pressure.

Parts and cost ranges

  • Camshaft sensor: $35 - $150
  • Crankshaft sensor: $40 - $200
  • Timing chain/belt replacement: $300 - $1,200
  • VVT solenoid: $50 - $300
  • Oil change (including filter): $30 - $100

What people get wrong

  • Thinking it's always a sensor issue; many times it's the timing chain.
  • Ignoring oil quality; dirty oil can impact VVT performance.
  • Replacing parts without proper diagnostics first.
  • Neglecting to check for related codes; they can provide crucial insight.
  • Assuming all engines behave the same; each platform has quirks.

Related codes

If you're dealing with P0017, you might also want to check out P0016, which deals with crankshaft/camshaft correlation issues, and P0018, which can indicate problems with the camshaft position. Both codes can provide you with valuable diagnostic hints.

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-- Hank, Master Mechanic at Mobile Master Mechanic

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