AutoCodes – Toyota – P1656 2000 Toyota Echo

P1656 2000 Toyota Echo Code - Oil Control Valve Circuit Malfunction

Quick Answer

Variable Valve Timing (VVT) system controls the intake valve timing to proper timing in response to driving condition. Common causes include Faulty Oil Control Valve (OCV), Oil Control Valve (OCV) harness is open or shorted, Oil Control Valve (OCV) 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: P1656 2000 Toyota Echo indicates Oil Control Valve Circuit Malfunction.
Common causes: Common causes include Faulty Oil Control Valve (OCV), Oil Control Valve (OCV) harness is open or shorted, Oil Control Valve (OCV) 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 9,807

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 Sep 06, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1656 2000 Toyota Echo Description

Variable Valve Timing (VVT) system controls the intake valve timing to proper timing in response to driving condition. The Engine Control Module (ECM) controls Oil Control Valve (OCV) to make the intake valve timing properly, and, oil pressure controlled with OCV is supplied to the VVT controller, and then, VVT controller changes relative position between the camshaft and the crankshaft.

OBDII Code P1656 2000 Toyota Echo - Oil Control Valve Circuit Malfunction - AutoCodes.com — P1656 2000 Toyota Echo Code - Oil Control Valve Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1656 2000 Toyota Echo?

Faulty Oil Control Valve (OCV)
Oil Control Valve (OCV) harness is open or shorted
Oil Control Valve (OCV) circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1656 2000 Toyota Echo?

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 P1656 2000 Toyota Echo 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.

Need more information about the P1656 2000 Toyota Echo code?

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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 P1656 2000 Toyota Echo Code

1. What are the common symptoms of OBDII code P1656 in a 2000 Toyota Echo?

- Common symptoms include rough idling, engine misfires, poor acceleration, and in some cases, the Check Engine light may illuminate.

2. What does the OBDII code P1656 for a 2000 Toyota Echo signify?

- OBDII code P1656 indicates an Oil Control Valve Circuit Malfunction in the vehicle's engine.

3. What are the potential causes of the Oil Control Valve Circuit Malfunction in a 2000 Toyota Echo?

- Potential causes include a faulty oil control valve, wiring issues, poor electrical connections, or a malfunctioning Engine Control Module (ECM).

4. How can I diagnose the OBDII code P1656 in my 2000 Toyota Echo?

- Diagnosing the code involves checking the oil control valve for proper operation, inspecting the wiring and connections for any damage, and using a diagnostic scanner to read the ECM data.

5. Can I drive my 2000 Toyota Echo with the OBDII code P1656?

- It is not recommended to drive the vehicle with this code present, as it can lead to poor engine performance and potentially cause further damage if left unaddressed.

6. How can I repair the Oil Control Valve Circuit Malfunction in my 2000 Toyota Echo?

- Repairing the issue may involve replacing the faulty oil control valve, repairing any damaged wiring or connections, and clearing the trouble code with a diagnostic tool.

7. Is it possible to reset the OBDII code P1656 in a 2000 Toyota Echo without fixing the underlying issue?

- While you can clear the code temporarily, it is important to address the root cause of the problem to prevent it from reoccurring.

8. Are there any preventive maintenance tips to avoid OBDII code P1656 in a 2000 Toyota Echo?

- Regularly servicing the engine, checking the oil control valve for proper function during routine maintenance, and addressing any engine issues promptly can help prevent this code from appearing.

9. Can a DIY enthusiast fix the Oil Control Valve Circuit Malfunction in a 2000 Toyota Echo?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address the issue themselves, but professional assistance is recommended for complex repairs.

10. How much does it typically cost to repair the Oil Control Valve Circuit Malfunction in a 2000 Toyota Echo?

- The cost of repair can vary depending on the extent of the issue, the parts needed, and labor rates, but it is advisable to consult a mechanic for an accurate estimate.