P0016 GMC Terrain
Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A) · Powertrain Code · Critical
What is P0016?
The crankshaft and camshaft position sensors on bank 1 are out of sync. Often caused by a stretched timing chain, jumped timing, or a failed VVT solenoid.
When the GMC Terrain triggers code P0016 (crankshaft position - camshaft position correlation (bank 1 sensor a)), it typically points to an issue in the powertrain system. This is a critical severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the GMC Terrain.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your GMC Terrain.
Common Causes on GMC Terrain
- Timing chain stretch on 2.4L Ecotec engine (very common failure)
- VVT solenoid stuck from oil sludge buildup on 1.5T turbo
- Cam phaser rattle on 2.0T Ecotec at cold startup
- Low oil level causing insufficient oil pressure to VVT system
Symptoms
- Hard starting or extended cranking before engine fires
- Rough idle with noticeable engine vibration
- Rattling or chain-slap noise on cold startup
- Reduced engine power and sluggish acceleration
- Check engine light illuminated
- Intermittent stalling at idle
Notes for GMC Terrain
The 2.4L Ecotec is notorious for timing chain stretch; listen for chain rattle at startup.