AutoCodes – Toyota – P0012 2007 Toyota Prius

P0012 2007 Toyota Prius Code - Camshaft Position 'A' Timing Over-Retarded Bank 1

Quick Answer

The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. Common causes include Low or Dirty Engine 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: P0012 2007 Toyota Prius indicates Camshaft Position 'A' Timing Over-Retarded Bank 1.
Common causes: Common causes include Low or Dirty Engine 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 8,951

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 Aug 22, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0012 2007 Toyota Prius 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 P0012 2007 Toyota Prius - Camshaft Position 'A' Timing Over-Retarded Bank 1 - AutoCodes.com — P0012 2007 Toyota Prius Code - Camshaft Position 'A' Timing Over-Retarded Bank 1

What does this mean?

What are the Possible Causes of the DTC P0012 2007 Toyota Prius?

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

How to Fix the DTC P0012 2007 Toyota Prius?

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 P0012 2007 Toyota Prius 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 P0012 2007 Toyota Prius 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 P0012 2007 Toyota Prius Code

1. What are the common symptoms of OBDII code P0012 on a 2007 Toyota Prius?

The common symptoms of code P0012 in a 2007 Toyota Prius include rough idling, decreased fuel efficiency, engine misfires, and the Check Engine Light coming on.

2. What does the OBDII code P0012 'Camshaft Position 'A' Timing Over-Retarded Bank 1' mean for a 2007 Toyota Prius?

Code P0012 indicates that the camshaft timing on Bank 1 is over-retarded, meaning that the camshaft is not in sync with the crankshaft as it should be.

3. What are some possible causes of OBDII code P0012 on a 2007 Toyota Prius?

Possible causes of code P0012 on a 2007 Toyota Prius include a faulty camshaft position sensor, a problem with the timing chain or belt, issues with the variable valve timing (VVT) system, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P0012 on my 2007 Toyota Prius?

Diagnosing code P0012 on a 2007 Toyota Prius involves checking the camshaft position sensor, inspecting the timing chain or belt for wear, examining the VVT system components, and scanning the ECM for any stored fault codes.

5. Can I continue driving my 2007 Toyota Prius with OBDII code P0012?

It is not recommended to continue driving your 2007 Toyota Prius with code P0012, as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P0012 on my 2007 Toyota Prius?

Repairing code P0012 on a 2007 Toyota Prius may involve replacing the camshaft position sensor, repairing or replacing the timing chain or belt, fixing any issues with the VVT system, or reprogramming the ECM.

7. Is it necessary to reset the Check Engine Light after fixing OBDII code P0012 on my 2007 Toyota Prius?

Yes, it is important to reset the Check Engine Light after addressing code P0012 on your 2007 Toyota Prius. This can be done using an OBDII scanner or disconnecting the battery for a few minutes.

8. How much does it typically cost to repair OBDII code P0012 on a 2007 Toyota Prius?

The cost of repairing code P0012 on a 2007 Toyota Prius can vary depending on the underlying cause of the issue. Repairs may range from a few hundred dollars to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P0012 on a 2007 Toyota Prius?

Some aspects of diagnosing and repairing code P0012 on a 2007 Toyota Prius may be suitable for experienced DIY enthusiasts, such as replacing the camshaft position sensor. However, more complex repairs involving the timing system or ECM may require professional help.

10. How can I prevent OBDII code P0012 from recurring on my 2007 Toyota Prius?

To prevent code P0012 from recurring on your 2007 Toyota Prius, it's important to follow the manufacturer's recommended maintenance schedule, use quality engine oil, and address any engine performance issues promptly to avoid putting strain on the camshaft timing system.