Severity: Fix right away. Driving risks expensive damage or a breakdown.
The computer is getting no usable signal from the sensor that tracks the camshaft's position on bank 1, which it needs to time fuel injection and, on some engines, spark.
Check the oil level first, inspect the wiring, and replace the sensor if it gives no signal. If the timing chain or belt has jumped, that is a bigger repair.
The engine may run rough, stall, or fail to start. Get it checked right away.
Avoid driving until it is checked — towing is the safer choice. The engine may run rough, stall, or fail to start. Get it checked right away.
The most common causes are: Failed camshaft position sensor; Damaged wiring or connector; Stretched or jumped timing chain or belt; Low oil level affecting variable valve timing. A scan tool and a visual check of the parts above is where a technician starts.
Check the oil level first, inspect the wiring, and replace the sensor if it gives no signal. If the timing chain or belt has jumped, that is a bigger repair.
