AutoCodes – Scion – P0023 Scion

P0023 Scion Code - Camshaft Position 'B' Actuator Circuit Bank 2

Quick Answer

The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. Common causes include Dirty Oil, Faulty variable valve timing (VVT), Faulty oil control valve (OCV). 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: P0023 Scion indicates Camshaft Position 'B' Actuator Circuit Bank 2.
Common causes: Common causes include Dirty Oil, Faulty variable valve timing (VVT), Faulty oil control valve (OCV).
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 8,340

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0023 Scion Description

The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. As a result of the angle change, the engine timing is advance or retard. Optimizing engine timing will help the engine improve torque and fuel economy, and the exhaust emissions decrease under overall driving conditions. The Variable Valve Timing (VVT) system includes the Oil Control Valve (OCV) and VVT controller. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control.

OBDII Code P0023 Scion - Camshaft Position 'B' Actuator Circuit Bank 2 - AutoCodes.com — P0023 Scion Code - Camshaft Position 'B' Actuator Circuit Bank 2

What does this mean?

What are the Possible Causes of the DTC P0023 Scion?

Dirty Oil
Faulty variable valve timing (VVT)
Faulty oil control valve (OCV)
Variable Valve Timing (VVT) harness is open or shorted
Oil Control Valve (OCV) circuit is open or shorted
Damaged Engine Control Module (ECM)

How to Fix the DTC P0023 Scion?

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 does this mean?

Code Tech Notes

If the engine oil is clean and the VVT and OCV circuits are OK, replaced the VVT to resolve the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0023 Scion 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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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.