P0017: Crankshaft-Camshaft Correlation Issue (Bank 1 Sensor B)
The P0017 code indicates that the Engine Control Module (ECM) has detected a misalignment between the crankshaft and the exhaust camshaft on Bank 1. This correlation error suggests the timing chain or belt may have jumped, or the variable valve timing (VVT) system is malfunctioning. Bank 1 refers to the side of the engine with cylinder #1, and Sensor B is the exhaust camshaft position sensor. This can lead to poor engine performance and potential internal damage if ignored.
01. Most Common Causes
- Timing chain/belt stretched or jumped a tooth
- Faulty exhaust camshaft position sensor (Bank 1)
- Worn timing chain tensioner or guides
- Oil sludge or low oil pressure affecting VVT actuator
- Faulty VVT solenoid or actuator on exhaust camshaft
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine may run rough or misfire
- Reduced power and fuel economy
- Hard starting or engine stalling
- Possible rattling noise from timing area
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect engine oil level and condition; check for sludge.
Step 3: Visually inspect timing chain/belt for slack or damage.
Step 4: Test exhaust camshaft position sensor (Bank 1) with multimeter.
Step 5: Check VVT solenoid operation and wiring for shorts/opens.
Step 6: Perform correlation test using scan tool to compare crankshaft and camshaft positions.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not recommended. Driving with P0017 can cause further engine damage, including bent valves or catastrophic timing failure. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
Costs vary widely: a simple sensor replacement may be $200-$400, while timing chain repairs can range from $500 to $1500 or more depending on the vehicle.