AutoCodes – Scion – P0020 Scion

P0020 Scion Code - Camshaft Position 'A' 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), Variable Valve Timing (VVT) circuit is open or shorted. 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: P0020 Scion indicates Camshaft Position 'A' Actuator Circuit Bank 2.
Common causes: Common causes include Dirty Oil, Faulty variable valve timing (VVT), Variable Valve Timing (VVT) circuit is open or shorted.
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 6,487

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
FAQs
Comments
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Code P0020 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 P0020 Scion - Camshaft Position 'A' Actuator Circuit Bank 2 - AutoCodes.com — P0020 Scion Code - Camshaft Position 'A' Actuator Circuit Bank 2

What does this mean?

What are the Possible Causes of the DTC P0020 Scion?

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

How to Fix the DTC P0020 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 P0020 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.

Frequently Asked Questions about P0020 Scion Code

What does the OBDII code P0020 mean on a Scion?

P0020 indicates an issue with the camshaft position actuator circuit for camshaft "A" on Bank 2, which controls variable valve timing (VVT) adjustments.

What are the common symptoms of a P0020 code in a Scion?

Symptoms include poor engine performance, rough idling, reduced fuel efficiency, difficulty starting, and an illuminated Check Engine Light.

What causes the P0020 code to appear?

Common causes include a faulty VVT solenoid, damaged wiring or connectors in the camshaft actuator circuit, low or dirty engine oil, or a malfunctioning engine control module (ECM).

How can I diagnose the P0020 code on a Scion?

Start by inspecting the VVT solenoid, wiring, and connectors for damage. Check the engine oil level and quality, and use a multimeter to test the circuit for proper voltage and continuity.

Can low or dirty engine oil trigger the P0020 code?

Yes, insufficient or contaminated oil can interfere with the proper functioning of the VVT system, potentially triggering the P0020 code.

How do I fix the P0020 code on my Scion?

Repairs may include replacing the VVT solenoid, repairing damaged wiring or connectors, changing the engine oil and filter, or reprogramming/replacing the ECM if necessary.

Can I drive my Scion with a P0020 code?

Driving with a P0020 code is not recommended, as it can lead to poor performance, increased emissions, and potential long-term engine damage if not addressed.

How much does it cost to repair the P0020 code?

Repair costs vary but typically range from $150 to $400, depending on whether the VVT solenoid, wiring, or another component needs replacement.

How does Bank 2 differ from Bank 1 in the P0020 code?

Bank 2 refers to the side of the engine opposite Bank 1, typically the side without cylinder 1 in a V-engine configuration.

Can a faulty ECM cause the P0020 code?

Yes, though less common, a malfunctioning ECM can misinterpret or fail to process signals from the camshaft actuator circuit, triggering the P0020 code.