AutoCodes – Generic – P1089

P1089 Code - VVEL Control Shaft Position Sensor Bank 1 Circuit

Quick Answer

VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously. Common causes include Faulty VVEL Control Shaft Position Sensor Bank 1, VVEL Control Shaft Position Sensor Bank 1 harness is open or shorted, VVEL Control Shaft Position Sensor Bank 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1089 indicates VVEL Control Shaft Position Sensor Bank 1 Circuit.
Common causes: Common causes include Faulty VVEL Control Shaft Position Sensor Bank 1, VVEL Control Shaft Position Sensor Bank 1 harness is open or shorted, VVEL Control Shaft Position Sensor Bank 1 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,466

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1089 Description

VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously. Rotational movement of the drive shaft equipped with eccentric cam is transmitted to output cam via the rocker arm and two kinds of links to depress the intake valve. The Engine Control Module (ECM) decides the target valve lift according to the driving condition and sends the command signal to the VVEL control module. The VVEL control module controls the rotation of the control shaft using the VVEL actuator motor and changes the movement of the output cam by shifting the link supporting point. As a result, valve lift changes continuously to improve engine output and response.
VVEL control shaft position sensor (1) is placed on VVEL actuator sub assembly and detects the control shaft position angle. A magnet is pressed into the arm on the edge of control shaft.
The magnetic field changes as the magnet rotates together with the arm resulting in the output voltage change of the sensor. VVEL control module detects the actual position angle through the voltage change and sends the signal to ECM.

OBDII Code P1089 - VVEL Control Shaft Position Sensor Bank 1 Circuit - AutoCodes.com — P1089 Code - VVEL Control Shaft Position Sensor Bank 1 Circuit

What does this mean?

What are the Possible Causes of the DTC P1089?

Faulty VVEL Control Shaft Position Sensor Bank 1
VVEL Control Shaft Position Sensor Bank 1 harness is open or shorted
VVEL Control Shaft Position Sensor Bank 1 circuit poor electrical connection
Faulty VVEL control module

How to Fix the DTC P1089?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1089 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Makes

P1089 Buick — Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off
P1089 Cadillac — Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off
P1089 Chevrolet — Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off
P1089 GMC — Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off
P1089 Infiniti — VVEL Control Shaft Position Sensor Bank 1 Circuit
P1089 Nissan — VVEL Control Shaft Position Sensor Bank 1 Circuit
P1089 Subaru — Tumble Generated Valve Position Circuit High Sensor 1

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.