The P0014 code on a Toyota Corolla is an OBD-II trouble code that indicates Camshaft Position “B” – Timing Over-Advanced or System Performance (Bank 1), meaning the exhaust camshaft for the first cylinder is over-advancing.
In this article, I’ll cover the P0014 trouble code in Toyota Corolla, its symptoms, causes, and how to fix it.
P0014 Toyota Corolla Trouble Code Definition
The P0014 trouble code in Toyota Corolla is defined as Camshaft Position Sensor B Timing Over-Advanced or System Performance (Bank 1).
What Does The P0014 Code Mean In Toyota Corolla?
The P0014 trouble code on a Toyota Corolla is an internal powertrain code that indicates excessive camshaft position (CMP) timing advance on Bank 1.
It can be seen alongside related codes such as P0011, P0012, and P0013.
The P0014 trouble code
indicates the location of an error.
Bank 1 refers to the region in the engine containing the first cylinder, while position “B” refers to an exhaust camshaft which, depending on your vehicle model and make/model, may be located either at the rear or right side from a driver’s perspective.
The P0014 trouble code indicates that the camshaft has exceeded a threshold set by the Engine Control Module (ECM), either speeding up or slowing its rotation.
What Are The Possible Causes of The P0014 Code in Toyota Corolla?
The P0014 trouble code in Toyota Corolla occurs when the vehicle’s computer detects that the exhaust camshaft on bank 1 is over-advancing, or ahead of schedule.
Therefore, a check engine light will illuminate to alert drivers and the ECU will store a P0014 code.
There are various causes that could result in the P0014 code being displayed on a Toyota Corolla:
- Improper Camshaft Timing
- Defective Camshaft Timing Control Solenoid
- Failure of variable camshaft tuning (VVT) or variable valve timing (VCT).
- Oil lines of variable camshaft tuning (VCT) or variable valve timing (VVT
) solenoid may become clogged with debris over time. - Engine Oil Low
- Oil Pressure Low
- Defective Camshaft Position Sensor
- A bad crankshaft position sensor
- Damaged wiring
- Defective timing chain or belt
- Defective Timing Tensioner
What Are The Common Symptoms of the P0014 Code In Toyota Corolla?
Here are some of the most frequent symptoms associated with a P0014 trouble code in Toyota Corolla:
- The Check Engine Light illuminates, alerting you to an issue.
- Starting Issue: This could be due to camshaft issues. As you turn the key, listen for clicking sounds as the car starts and then stops; eventually, if not resolved, it may not start at all.
- Stalling: Similar to starting issues, your vehicle may experience difficulty idling or randomly stall at lower speeds.
- P0014 Code Causes Significant Decreasing Fuel Economy: The P0014 code may cause abrupt decreases in fuel economy, making it easier to detect.
- Noise and Vibration from the Engine: A camshaft issue can lead to a rough ride due to an incorrect fuel-air mix. You may notice your vehicle shaking, emitting more exhaust smoke, or running louder than normal.
- Vehicles will fail emission tests due to engine emissions.
Is It Safe To Drive a Toyota Corolla With a P0014 Code?
No, it is never safe to drive a Toyota Corolla with the P0014 trouble code without first diagnosing the issue.
A bad camshaft timing could potentially result in complete engine failure – in which case replacement of that engine could become costly and time-consuming.
People often become worried when their vehicle either won’t start or seems unresponsive. The extent of the issue, however, depends on what caused the code in the first place.
Timing chains that malfunction can cause major engine damage. Neglecting to take your car in for repairs could result in additional harm and an expensive repair bill, so it’s best to get to a mechanic as soon as possible to have the issue diagnosed and addressed.
How To Diagnose The P0014 Code In a Toyota Corolla
Here is how to diagnose the P0014 trouble code in Toyota Corolla:
- Connect an OBD2 scanner and look for any trouble codes that could be causing the P0014 code. If you spot anything related to either the crankshaft position sensor or the camshaft position sensor, it’s time to diagnose these components to see if they can help solve your P0014 issue.
- Check your engine oil level to make sure it’s adequate. If it is low, add more or replace both the oil and filter. Clear away any P0014 error codes and try again.
- Check your service manual and oil filler cap for signs of sludge inside the engine. If there is, your engine oil may be very old and clogging up its oil lines to either variable valve timing (VVT) or variable camshaft tuning (VCT) engine control valve. In such cases, it may be necessary to change both types of oil and clean both components simultaneously.
- Test the variable valve timing (VVT) or variable camshaft tuning (VCT) valve solenoid using your diagnostic scanner. Perform an output test to see whether or not the VCT valve solenoid moves. If you have some car electrical knowledge, try experimenting with 12v+ power and ground connections.
- If possible, remove the variable camshaft tuning (VCT) control valve solenoid and clean its oil passages using compressed air and an appropriate cleaning solution.
- Verify the camshaft and crankshaft position sensors to confirm they are sending accurate signals.
- Manually verify the engine camshaft timing by consulting your owner’s manual for instructions on how to do so in your engine. If the timing belt or chain is defective, disassemble it and inspect for damage.
Most Common Mistakes When Diagnosing The P0014 Code In Toyota Corolla
Toyota Corolla drivers often misdiagnose the P0014 code by mistakenly believing their timing chain or belt is defective.
Replacement can be costly, and in many cases, the P0014 code could be indicative of another underlying issue; thus, conducting a comprehensive diagnosis before beginning repairs is critical for accurate outcomes.
P0114 in Toyota Corollas often indicates a malfunctioning VVT or VCT system, which controls camshaft timing. Other potential causes could include an errant camshaft position sensor or low oil levels.
How Much Does It Cost To Repair P0014 Code In Toyota Corolla
Toyota Corolla exhaust camshaft position sensor costs between $29.99 and $49.99 while the labor to replace cost $90.
The total cost to repair the P0014 code in Toyota Corolla can cost between $119.99 and $139.99.
What Repairs Can Fix The P0014 Code in Toyota Corolla?
Repairs that can fix the P0014 code in Toyota Corolla include:
- Add or drain excess engine oil and replace the oil filter as necessary.
- Cleaning oil lines associated with variable camshaft tuning (VCT) or variable valve timing (VVT) systems is necessary.
- Clean or replace the variable camshaft tuning (VCT) or variable valve timing (VVT) solenoid.
- Replacement of the timing belt or chain
- Replace the camshaft timing control valve solenoid.
- Adjust the Camshaft Position Sensor
- Replace the crankshaft position sensor
- Repair any defective wiring.
How To Fix The P0014 Code In Toyota Corolla
Here is how to fix the P0014 code in Toyota Corolla:
- Clearing error codes and conducting a road test
- By regularly changing the oil and filter with engine-specific viscosity oil, you can guarantee optimal performance and extend engine life.
- Repair or replace the wiring to the bank 1 exhaust camshaft oil control valve.
- Bank 1 requires replacing its exhaust camshaft oil control valve.
- Follow the service manual’s instructions when repairing or replacing the timing chain and camshaft-phasers.
In Conclusion
Toyota Corolla’s P0014 code indicates a potential timing issue with the camshaft. This could be caused by incorrect camshaft timing, so it’s important to address this problem promptly or face expensive repair bills.
But it could also be caused by something as minor as insufficient engine oil or a malfunctioning camshaft position sensor – both of which are typically repairable for less than $200.
If you are uncertain of your ability to fix this problem yourself, contact a knowledgeable mechanic right away for help.
