Trouble code solution P063E: decoding, causes, resetting, meaning

Contents

Technical description and explained code P063E
Symptoms of vehicle malfunctions
Factors that can cause this error code
How to fix or reset OBD-2 code P063E
Diagnose and repair of problems
Throttle position sensor
Throttle actuator motor
Throttle body
On which vehicles does this problem occur most frequently
Video

Fault code P063E is called “Auto Configuration Throttle Input Not Present” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.

Technical description and explained code P063E

Stored code P063E means that the Powertrain Control Module (PCM) has detected a malfunction. Which is related to the absence of throttle input signal with auto-tuning.

When the ignition key is turned to the ON position and voltage is applied to the various on-board controllers (including the PCM). Multiple self-diagnostic procedures are initiated.

The PCM uses input signals from the engine sensors to automatically adjust the engine start strategy and perform these self-tests. Throttle position is one of the key input signals required by the PCM for automatic tuning.

The throttle position sensor (TPS) provides the input signal to the PCM to perform the auto-tune. The TPS is a variable resistance sensor that is mounted on the throttle body.

The end of the throttle shaft is inserted inside the TPS, as the shaft moves, it also moves a potentiometer inside the TPS and causes the circuit resistance to change. This changes the voltage of the TPS signal circuit, which is fed to the PCM.

If the PCM cannot detect the throttle position input circuit when the ignition switch is set to the ON position and voltage is applied to the PCM. Code P063E will be stored and the malfunction indicator lamp may illuminate.

The auto-tuning system may also be deactivated, resulting in serious handling problems.

Symptoms of vehicle malfunctions

The main signal that an error P063E has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.

It can also be warning signs such as:

The “Check engine” control lamp on the control panel will illuminate (the code will be stored as a fault).
Other related trouble codes may also be present (e.g. throttle position sensor (TPS)).
Floating revolutions, and attempts to stall while idling.
Delayed engine start.
Controllability problems.

Automatic configuration codes should be taken seriously because engine starting quality, idling, and driveability may be affected. Stored code P063E should be considered as serious, try to eliminate it as soon as possible.

Factors that can cause this error code

The error code P063E can mean that one or more of the following problems have occurred:

Defective throttle position sensor (TPS).
Throttle control circuit breakage or poor electrical connection between TPS and PCM.
Corrosion in TPS connector.
Sometimes a faulty PCM module is the cause.

How to fix or reset OBD-2 code P063E

Some suggested steps for troubleshooting and fix the error code P063E:

Read all stored data and error codes with an OBD-II scan tool. To find out when and under what circumstances error P063E appeared.
Clear the error codes from the computer memory and test-drive the vehicle to find out if the malfunction appears again.
Visually inspect the electrical wires and connections related to the throttle position sensor for looseness and damage.
Test the TPS sensor.
Clear the error code from the computer memory again, and test drive the vehicle to see if the problem is resolved.

Diagnose and repair of problems

If you have recently replaced the sensor, you may need to adjust the TPS. On some vehicles, the installation instructions require a proper adjustment to prevent the P063E fault from occurring.

If there are no symptoms, the problem may be intermittent, and clearing the code can sometimes resolve it temporarily. In this case, you should definitely check the wiring to make sure it’s not chafing or worn anywhere, etc.

Throttle position sensor

There are usually three wires on these sensors: a 5V reference voltage supplied by the PCM computer, ground, and a sensor control signal. Make sure all connections are secure and there are no loose wires in the harness.

Check grounding reliability with a digital voltmeter set to ohm scale. Also test the reference voltage from the PCM, it should be 5 volts. The position sensor signal should also be tested with a multimeter to determine if the voltage increases smoothly without drooping over the entire range of motion.

The oscillation range should be from 0.5V to 4.5V. The minimum value is displayed when the pedal is not depressed. The maximum when the pedal is fully depressed, when the throttle is in the fully open position.

Throttle actuator motor

The PCM sends a signal to the throttle actuator motor depending on the pedal input position. And also a predetermined output value depending on operating conditions.

Check the throttle motor for proper resistance by disconnecting the wiring harness connector. The resistance should be within factory specifications, if it is too high or too low, the motor may not move to the specified position.

Check the wiring harness for power with a multimeter set to the volt scale. The voltage should be close to the battery voltage when the key is in the on position.

The duty cycle of the signal wire can be checked with a graphing multimeter or oscilloscope set to the duty cycle function. The duty cycle should match the percentage set by the PCM.

It may be necessary to check the set duty cycle from the PCM using an advanced diagnostic tool.

Throttle body

The P063E fault may also appear due to throttle body contamination, when something is obstructing the free flow of the throttle body. Therefore, remove the throttle body and check for accumulations of dirt or fouling that could interfere with normal movement.