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P0063 Code – What Does It Mean & How To Fix It

This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.


The P0063 DTC code refers to the failure of the intake manifold air control solenoid circuit. This code is frequently encountered in OBD II vehicles with a system monitoring the performance of various components, e.g., an intake manifold air control solenoid.


The intake manifold air control solenoid circuit has experienced a high voltage situation, as indicated by the P0063 code, which has been identified by the electronic control module (ECM). In order to optimize the air-fuel combination for effective combustion, this circuit controls the airflow into the intake manifold.


The P0063 DTC code may be brought on by a number of different factors, including:

  • A faulty solenoid in the intake manifold air control system might result in a high voltage situation in the circuit.
  • Wire problems: Corroded, damaged, or loose wire and connections may cause a circuit break, resulting in excessive voltage.
  • Short or open circuit: A high voltage situation might result from a short or open circuit in the intake manifold air control solenoid circuit.
  • ECM malfunction: On occasion, a malfunctioning ECM may wrongly identify a high voltage condition and set off the code.


Common symptoms associated with the P0063 DTC code may include:

  • Illuminated check engine light (MIL)
  • Reduced engine performance or power
  • Rough idling or stalling
  • Engine hesitation or surging
  • Decreased fuel efficiency


A qualified mechanic will usually perform the following steps to diagnose the P0063 code accurately: 

  • Using a diagnostic scanner, you can recover the specific problem code. 
  • Check the air control solenoid wires and connectors on the intake manifold. 
  • Perform a multimeter check of the solenoid’s resistance and function. D7) Verify that the ECM is functional and has a potential communication problem.

Common mistakes

It’s critical to avoid the following typical errors when dealing with the P0063 DTC code:

  • Failing to resolve any concurrently existing linked codes or problems.
  • Replacing the intake manifold air control solenoid without conducting the necessary tests to verify its failure.
  • Ignoring issues with the wiring and connectors, which might be the main contributor to the high voltage state.

How serious is this?

The P0063 code is not likely to have a direct or serious impact, but it should be borne in mind. Insufficient attention to this problem could lead to reduced engine performance, reduced fuel consumption, and the potential deterioration of other components over time. In order to prevent further complications, it is recommended that this code be dealt with immediately.

What repairs can fix the code?

repair manuals

Potential fixes for the P0063 DTC code might involve: 

  • Replacing a malfunctioning intake manifold air control solenoid if it fails to test.
  • Replacing or repairing the solenoid circuit’s broken wiring and connections.
  • Fixing any open or short circuits in the circuit.
  • In rare instances, replacing a flawed ECM if it is shown to be the cause.

Related codes

Other related codes that may be encountered alongside or instead of P0063 include:

  • P0060: Intake Manifold Air Control Solenoid Circuit Malfunction
  • P0061: Intake Manifold Air Control Solenoid Circuit Performance
  • P0062: Intake Manifold Air Control Solenoid Circuit Low Voltage


The P0063 DTC code indicates a high voltage condition in the intake manifold air control solenoid circuit. You are qualified to deal with the problem effectively if you know what it is, its causes, symptoms, diagnosis procedures, commonly made mistakes, serious errors, possible repairs, and associated codes. For the purpose of ensuring the correct diagnosis and resolution of P0063 DTC codes, it is recommended that you consult with a professional mechanic if you are not sure or require assistance.

P0063 Code – What Does It Mean & How To Fix It