P0010 In 2009-2010 Toyota Corolla And How To Fix It

Today we’ll talk about the P0010 in the 2009-2010 Toyota Corolla and how to conduct inspection procedures to determine precisely what’s causing it.

After that, you can solve the P0010 problem on your Toyota Corolla.

What Components Can Trigger Code P0010?

In general, the cause of P0010 is due to a malfunction in several components, such as:

  • camshaft timing oil control valve assembly
  • harness and connector camshaft timing oil control valve assembly – ECM
  • Engine Control Module

The variable valve timing (VVT) system modifies the timing of the intake valves to improve the vehicle’s driveability. The valve timing can be adjusted by rotating the VVT controller thanks to the engine oil pressure.

The engine oil line is altered using a solenoid valve on the camshaft timing oil control valve. When the ECM sends 12 Volts to the solenoid, the valve will move in response.

The Electronic Control Module (ECM) is responsible for adjusting the timing of activating the solenoid following the position of the camshaft, crankshaft, throttle, and others.

This DTC is intended to identify whether or not the camshaft timing oil control valve circuit has a short or an open. When the engine is operating, the ECM will activate the check engine light (MIL) and set a diagnostic trouble code (DTC) if such cam timing oil control valve component task cycle is either higher or too low.

Steps to Diagnose and Fix P0010 Problems In 2009-2010 Toyota Corolla

Read Your DTC Output

  1. Establish a connection between Techstream and DLC3.
  2. Make sure the ignition switch is in the ON position.
  3. You need to activate Techstream.
  4. After you get a record of the freeze frame information and DTC, clear any DTCs.
  5. Make sure the ignition switch is in the OFF position.
  6. Turn the key to the ON position and let the engine run at an idle condition.
  7. Navigate to the Powertrain/Engine and ECT/Trouble Codes menus.
  8. Be sure to read DTCs.
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Evaluation and Troubleshooting of DTC Readings

  1. If the result is no output, you can check intermittent problems. Use the check mode to look over the engine control module. If the ECM is already in check mode, Techstream can more easily identify intermittent issues. The ECM’s one-trip detection logic, used in check mode, is highly responsive to faults versus the two-trip logic used in standard operation (default). Follow these steps to check intermittent problems:
    1. Clear your DTCs
    2. Through the Techstream, transition the ECM from its normal mode into its check mode.
    3. Next, you can perform a simulation test.
    4. Inspect the harnesses, connectors, and terminals.
  2. But if it shows P0010, you need to check the camshaft timing oil control valve assembly as follows: 
    1. First, remove the connection from the camshaft timing oil control valve assembly.
    2. Take readings of the resistance using the parameters outlined in the following standard resistance:
      1. Tester connection: 1 -2
      2. Temperature condition: 20° C or 68° F
      3. Specified condition: 6.9-7.9 Ω
    3. Ensure the connector for the camshaft timing oil control valve assembly is reconnected correctly.
    4. You must replace the camshaft timing oil control valve assembly if the reading does not match the standard resistance. However, if the measurement results are OK, you can proceed with the next step.
  3.  Checking the harness and connectors, you can do in the following way:
    1. Ensure that the connector for the camshaft timing oil control valve assembly is disconnected.
    2. Disconnect your Engine Control Module (ECM) connector
    3. Use the specification value below to determine the resistance:

      Standard Resistance (Check for Open)

      Connection Test Test Conditions Specific Value
      B95-1 - B31-100 (O C 1+) Always Below 1 Ω
      B95-2 - B31-123 (O C 1-) Always Below 1 Ω

      Standard Resistance (Check for Short):

      Connection Test Test Conditions Specific Value
      B95-1 or B31-100 (O C 1+) - Body ground Always 10 kΩ or higher
      B95-2 or B31-123 (O C 1-) - Body ground Always 10 kΩ or higher
    4. Ensure the connector for the camshaft timing oil control valve assembly is connected correctly.
    5. Next, you should reconnect the ECM.
    6. You must replace the harness or connector if the reading does not match the standard resistance in the table above. But if the readings match the table above, you should replace your ECM.

That’s how to fix the P0010 problem on the 2009-2010 Toyota Corolla.

In addition, you can also read my article about changing the Toyota Corolla engine oil appropriately.

I hope this information is helpful for you, and keep driving safe.

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