Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
Code P0016 indicates that the ECM detected a timing mismatch between the Crankshaft Position Sensor (CKP) and Camshaft Position Sensor (CMP) on Bank 1. Most commonly caused by a stretched timing chain, worn timing guide rails, or stuck VVT cam phaser.
Listen for timing chain rattling on cold startup. First rule out an electrical sensor glitch by swapping the CMP sensor ($25). If chain rattle is audible or code returns immediately, inspect the timing chain tensioner extension—a stretched chain requires a timing chain kit replacement.
Interactive Symptom Pinpoint Troubleshooter
Answer 2 diagnostic tests to isolate the exact component failure for P0016.
Do you hear a loud metallic rattling noise from the front timing cover for 2-4 seconds on a cold engine startup?
Live Scanner & Multimeter Benchmark Values
Compare your live OBD-II PID sensor data against OEM factory operating specs for P0016.
| Monitored Parameter / Sensor PID | Healthy OEM Operating Range | Fault Threshold (Triggers P0016) |
|---|---|---|
| Timing Chain Stretch Tolerance (Cam/Crank Phase) | -4.0° to +4.0° phase angle | >8.0° phase angle confirms jumped or stretched timing chain |
| CMP Camshaft Sensor Output (Oscilloscope) | Clean 5V square wave pulse | Missing teeth pulse or distorted waveform |
Symptoms Associated with P0016
Drivers typically observe the following symptoms when the ECM flags P0016:
Common Root Causes & Statistical Probability Matrix
Statistical breakdown of what triggers this code based on automotive repair shop data.
Step-by-Step Diagnostic & Repair Procedure
Follow this logical order to isolate and repair P0016 before spending money on costly parts.
Step 1: Cold Start Noise Check
Have assistant start engine while you listen near front timing cover for chain rattle.
Step 2: Scanner Cam Phase Live Data
Read Cam/Crank Phase Angle PID. If >8 degrees, chain is mechanically stretched.
Step 3: Swap Cam Sensor
Rule out cheap sensor fault before taking engine apart.
Vehicle-Specific Failure Trends & Technical Bulletins
Real workshop failure patterns reported by mechanics across popular makes and models for P0016.
VW / Audi (2.0L TSI / TFSI EA888)
GM 3.6L V6 (Traverse / Acadia / Enclave / Camaro)
Ford F-150 (3.5L EcoBoost)
Dave Miller, ASE Master Tech
ASE L1 Certified Master ReviewerASE Certified Master Automobile Technician (A1-A8) & L1 Advanced Engine Performance • 24 years automotive diagnostic experience
“Always verify sensor voltages and harness grounds before purchasing replacement electronic components.”