Cold Start B Camshaft Position Timing Performance Bank 1

Common symptoms

What you'll notice

• Check and replace the camshaft position sensor.
• Inspect and clean the camshaft phaser.
• Check and repair any wiring or connection issues related to the camshaft position sensor.
• Check and replace the camshaft timing solenoid.
• Perform a thorough inspection of the camshaft and associated components for any signs of damage or wear.

Common causes

Most likely first

1. Faulty camshaft position sensor
2. Incorrect camshaft timing
3. Damaged or worn camshaft position actuator
4. Clogged or restricted oil passages to the camshaft position actuator
5. Faulty engine control module (ECM)

How to diagnose & fix

Work through it in order

1. Hard starting or difficulty in starting the engine when it is cold
2. Rough idle or a fluctuating idle speed
3. Decreased engine performance or lack of power
4. Stalling or intermittent engine shutdown
5. Illumination of the Check Engine Light