P0012 Scion 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 Scion 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 Scion 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 Scion?
- 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 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.
Code Tech Notes
2005-2006 Scion xA
2006-2006 Scion xB
Scion Factory Service Bulletin OBDII Code P0012
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0012 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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Information for Specific Scion Models
- P0012 2005 Scion xB — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2006 Scion xB — Camshaft Position 'A' Timing Over-Retarded Bank 1
- P0012 2007 Scion xB — Camshaft Position 'A' Timing Over-Retarded Bank 1
Frequently Asked Questions about P0012 Scion Code
1. What are the common symptoms of OBDII code P0012 in a Scion?
Symptoms may include rough idling, engine misfires, decreased fuel efficiency, and potential stalling of the vehicle.
2. What are the possible causes of OBDII code P0012 in a Scion?
Common causes include a faulty camshaft position sensor, a malfunctioning variable valve timing (VVT) system, a stretched timing chain, or issues with the engine's oil flow.
3. How serious is OBDII code P0012 in a Scion?
This code should be addressed promptly to prevent potential damage to the engine. Continuing to drive with this code present could lead to more severe engine issues over time.
4. Can OBDII code P0012 be caused by low engine oil levels?
Yes, low engine oil levels or dirty oil can affect the VVT system's operation and contribute to triggering code P0012. Ensuring proper oil levels and regular oil changes is essential.
5. How can I diagnose OBDII code P0012 in my Scion?
Diagnosis typically involves using an OBDII scanner to read the code, inspecting the camshaft position sensor, checking the VVT system, and examining the timing chain for wear or stretch.
6. What are some repair tips for resolving OBDII code P0012 in a Scion?
Repair tips may include replacing the camshaft position sensor, repairing or replacing the VVT solenoid, inspecting the timing chain for proper tension, and ensuring the engine oil is clean and at the correct level.
7. Can I drive my Scion with OBDII code P0012?
It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage. It is best to address the underlying issue as soon as possible.
8. How much does it typically cost to repair OBDII code P0012 in a Scion?
The cost of repairs can vary depending on the specific cause of the code. Costs may range from a few hundred to over a thousand dollars, depending on the extent of the repairs needed.
9. Will resetting the OBDII code P0012 in my Scion make it go away permanently?
Simply resetting the code without addressing the underlying issue will not solve the problem. The code is likely to reappear until the root cause is diagnosed and repaired.
10. Can OBDII code P0012 in a Scion cause permanent engine damage if left unresolved?
Continued driving with this code could potentially cause permanent engine damage, especially if the underlying issue is related to the timing chain or VVT system. It is crucial to address the problem promptly.
Discuss the causes and fixes for P0012 Scion OBDII Code
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You nailed the symptoms,the code, and the repair without having to be held hostage by a pay the mechanic site for the answer. Thanks!
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If the time limit has passes on your warranty abround how much does it cost to fix?
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Depends what the problem is. If is just an oil change, then it should cost you around $25. You should start by changing the engine oil and filter and if the problem persist you should have a tech diagnose the problem.
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Please tell me the risk of operate the vehicle with this code for a long period (2 to 3 months) ? Thanks in advance
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