Engine-Codes - Chevrolet - P2645 Chevrolet

P2645 Chevrolet Code - Intake Rocker Arm Solenoid Valve 1 Control Circuit

- Code Popularity: 21,954 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P2645 Chevrolet?

  • Faulty Intake Rocker Arm Solenoid Valve 1
  • Intake Rocker Arm Solenoid Valve 1 harness is open or shorted
  • Intake Rocker Arm Solenoid Valve 1 circuit poor electrical connection

|How to Fix the P2645 Chevrolet Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Code P2645 Chevrolet Tech Notes





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|What is the Cost to Diagnose the Code P2645 Chevrolet?

Labor: 1.0

The cost to diagnose the P2645 Chevrolet code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code P2645 Chevrolet Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P2645 Chevrolet Code Mean?

The rocker arm actuator system enables the Engine Control Module (ECM) to change the camshaft lift and duration while the engine is operating. The camshaft has 3 lobes for each intake valve. The inner lobe is for low lift and the 2 outer lobes are for high lift. The rocker arm solenoid valve controls the 2-step lift by controlling the oil flow to the rocker arm. In default mode, a locking pin locks the inner and outer mechanisms of the rocker arm together to provide high lift. When low lift is commanded, oil pressure retracts a locking pin within the rocker arm.
The rocker arm solenoid valve receives a signal from the ECM. The ECM controls the rocker arm solenoid valve by supplying a 12 V PWM signal. The ECM supplies a ground to the low reference circuit.

Intake Rocker Arm Solenoid Valve 1 Control Circuit

|Need more Information on the P2645 Chevrolet Code?

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|Need Help with the P2645 Chevrolet Code?

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