P0012 Toyota Code - Camshaft Position 'A' Timing Over-Retarded Bank 1
Quick Answer
The Variable Valve Timing (VVT) system adjusts the intake valve timing to improve driveability. Common causes include Low or Dirty Engine Oil, Valve timing, Faulty Camshaft Timing Oil Control Valve Assembly. 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 Toyota indicates Camshaft Position 'A' Timing Over-Retarded Bank 1.
- Common causes
- Common causes include Low or Dirty Engine Oil, Valve timing, Faulty Camshaft Timing Oil Control Valve Assembly.
- 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.
Code P0012 Toyota Description
The camshaft timing oil control valve assembly is a solenoid valve and switches the engine oil line. The valve moves when the Engine Control Module (ECM) applies 12 V to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.
The ECM optimizes the intake valve timing using the Variable Valve Timing (VVT) system to control the intake camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.
If the difference between the target and actual intake valve timing is large, and changes in the actual intake valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P0012 Toyota?
- Low or Dirty Engine Oil
- Valve timing
- Faulty Camshaft Timing Oil Control Valve Assembly
- Camshaft Timing Oil Control Valve Assembly circuit is open or shorted
- Camshaft Timing Oil Control Valve Assembly circuit is open or shorted
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0012 Toyota?
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.
Code Tech Notes
2005 Toyota Corolla
2006 Toyota Corolla
2007 Toyota Corolla
2005 Toyota Matrix
2006 Toyota Matrix
2007 Toyota Matrix
2005-2007 Toyota Corolla, Matrix Factory Service Bulletin OBDII Code P0012
2005 Toyota Camry
2006 Toyota Camry
2007 Toyota Camry
2005-2007 Toyota Camry Service Bulletin OBDII Code P0012
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0012 Toyota 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 Toyota code?
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Information for Specific Toyota Models
- P0012 2006 Toyota Camry — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2007 Toyota Camry — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2008 Toyota Camry — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2009 Toyota Camry — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2010 Toyota Camry — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2011 Toyota Camry — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2001 Toyota Corolla — Camshaft Position 'A' Timing Over-Retarded Bank 1 3ZZ-FE Engine
- P0012 2002 Toyota Corolla — Camshaft Position 'A' Timing Over-Retarded Bank 1 3ZZ-FE Engine
- P0012 2003 Toyota Corolla — Camshaft Position 'A' Timing Over-Retarded Bank 1 3ZZ-FE Engine
- P0012 2004 Toyota Corolla — Camshaft Position 'A' Timing Over-Retarded Bank 1 3ZZ-FE Engine
- P0012 2005 Toyota Corolla — Camshaft Position 'A' Timing Over-Retarded Bank 1 3ZZ-FE Engine
- P0012 2006 Toyota Corolla — Camshaft Position 'A' Timing Over-Retarded Bank 1 3ZZ-FE Engine
- P0012 2001 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2002 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2003 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2004 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2005 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2006 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2007 Toyota Highlander — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2004 Toyota Prius — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2005 Toyota Prius — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2006 Toyota Prius — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2007 Toyota Prius — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2008 Toyota Prius — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2009 Toyota Prius — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2013 Toyota RAV4 — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2014 Toyota RAV4 — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2015 Toyota RAV4 — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2016 Toyota RAV4 — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2017 Toyota RAV4 — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2018 Toyota RAV4 — Camshaft Position 'A' Timing Over-Retarded Bank 1
Frequently Asked Questions about P0012 Toyota Code
1. What are the common symptoms of OBDII code P0012 on a Toyota?
- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling of the vehicle.
2. What can cause the OBDII code P0012 on a Toyota?
- The code is often triggered by issues such as a faulty camshaft position sensor, a malfunctioning Variable Valve Timing (VVT) system, or a problem with the timing chain.
3. How serious is OBDII code P0012 on a Toyota?
- While the code itself may not cause immediate harm to the vehicle, it can lead to poor engine performance and should be addressed promptly to prevent further damage.
4. How can I diagnose the cause of OBDII code P0012 on my Toyota?
- Diagnosing P0012 usually involves checking the camshaft position sensor, inspecting the VVT system, examining the timing chain for wear, and ensuring proper oil flow to the components.
5. Can I drive my Toyota with OBDII code P0012?
- It is not recommended to drive with the code present, as it can lead to engine issues and potentially cause further damage over time. It's best to address the problem as soon as possible.
6. How can I repair OBDII code P0012 on my Toyota?
- Repair options may include replacing the camshaft position sensor, repairing or replacing the VVT system components, or adjusting the timing chain if necessary.
7. Will resetting the OBDII code P0012 on my Toyota make it go away permanently?
- Resetting the code may temporarily clear the Check Engine Light, but if the underlying issue causing P0012 is not fixed, the code is likely to return.
8. Can a DIY enthusiast fix OBDII code P0012 on a Toyota?
- Depending on their skill level, a DIY enthusiast may be able to address the issue by following repair guides, but it's recommended to consult a professional mechanic for proper diagnosis and repair.
9. How much does it cost to repair OBDII code P0012 on a Toyota?
- The cost of repair can vary depending on the exact cause of the code and whether any parts need to be replaced. It's advisable to get a diagnostic from a mechanic for an accurate estimate.
10. How long can I safely drive my Toyota with OBDII code P0012 before getting it repaired?
- It's best to avoid driving the vehicle with the code present to prevent potential engine damage. Addressing the issue promptly is the safest course of action.
Discuss the causes and fixes for P0012 Toyota OBDII Code
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I was not aware of the information that you have presented in this post. Thanks for sharing such a useful info.
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I have a 2003 Camy 4cyl.. Check engine light code p0012 on and off every few days or few hundred miles. Done: changed engine oil few times every 2-3 hundred miles, changed oil control valve OCV, cam semsor. The system still there. Please help!
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2007 Toyota Camry with this code and no other symptoms. Haven't replaced anything yet. Anyone else have something similar, and what did you do to resolve it?
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There is a factory service bulletin for this code. The factory recommend replacing the camshaft timing gear assembly. See "Tech Notes" above for a link to the bulletin.
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If it was the timing though, wouldn't I actually notice symptoms? Seems like there are simpler things to check out before that length must be taken. What do you think?
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The factory recommends replacing the camshaft gear if there are no other symptoms and the light is ON. If no other symptoms are present, then there is nothing else to check.
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Was curious that the bulletin said it was for the ’05 – ’07 Camry (2AZ–FE). Wasn't sure what was meant by the 2AZ-FE, so I looked it up, and apparently that is the four cylinder model of engine. Mine is actually the 6 cylinder ( 2GR-FE). Would you know if this bulletin applies, or if there is a similar one for my model?
And thank you for your input. Really appreciate the responses.
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I have a 2003 Celica 1.8L 1ZZ-FE that has the P0012 code. The engine has a loud knocking sound and loss of power. I took the valve cover off and and tried starting the engine to see if I could spot something and everything looked fine. There are no metal shards in the oil which by the way is full. What's the diagnosis?
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The code you are getting is more than likely the result of the mechanical problem with the engine. Try to diagnose the loud knocking noise first. Unfortunately online is a bit difficult to diagnose problems. I recommend having a tech listing to the noise and diagnose the problem.
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Start by changing the engine oil. If the problem persist you have to replace the "Camshaft Timing Oil Control Valve" For Intake Side
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I have corolla 2010 1.8l car. So i have recently changed the champshaft. Then check eng light,vsc lights,track lights came on.then i change the champshaft sensor also.but now this code came on.which part should i change nw.
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Start by checking the engine oil level and condition. If the oil level and condition is OK, then you may have to replace the Variable Valve Timing Controls Solenoid (or Camshaft Timing Oil Control Valve)
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i have 2011 toyota sienna 6cyl .. camshaft position A timing over- retarded bank 1. where can i find it in the engine
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For your model and year, the most likely cause of the P0012 code is the "Camshaft Timing Oil Control Valve". Before you replace the valve, make sure the engine oil level and condition is OK. Change the engine oil and filter if needed.
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I have a 2012 Highlander Limited and my engine light along with the trac light came on at the same time - stop by Orielys to get a reading which error code P0012 popped up stating I have to replace the cam shaft sensor is the camshaft sensor, oil sensor or V V T sensor the same thing / question 2 is the cam shaft sensor in relationship to the trac off warning light that came on for a 2012 highlander limited I have 304K miles on the vehicle
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is the camshaft sensor, oil sensor or V V T sensor the same thing
The Oil sensor is different
question 2 is the cam shaft sensor in relationship to the trac off warning light
No
Before replacing any parts, make sure the engine oil level and condition is OK. If necessary, replace the engine oil and filter.
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Got a p0012 on my toyota highlander xle 2015, just changed oil. Where is bank1 located?
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On your 2015 Toyota Highlander XLE, the P0012 code refers to the "A" Camshaft Position Timing - Over-Retarded (Bank 1). Bank 1 is located on the side of the engine where cylinder 1 is located. For your V6 engine, Bank 1 is on the side closer to the firewall (the rear side of the engine).
If you’ve just changed the oil, this code can sometimes be triggered if the oil level is incorrect, the oil filter is clogged, or if there’s an issue with the oil control valve (OCV). Double-check the oil level and filter to rule those out as potential causes.
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