How do I fix code P0638?
How do I fix code P0638?
Depending on the diagnosis, common repairs for this code are:
- Cleaning the throttle body; removing carbon buildup in throttle body using approved solvent.
- Replacement of faulty throttle actuator motor.
What does the code P0638 mean?
P0638 is a diagnostic trouble code (DTC) for “Throttle Actuator Control Range/Performance (Bank 1)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
What is throttle adaptation?
Throttle body adaptation is a system where it learns your daily commute habits, over time it could turn sluggish. The steps: Push Engine button ON (once; do not start engine) Step on the throttle pedal down (all the way down) Hold it there for 30-40 seconds.
How do you adapt a VW throttle body?
Registered
- Turn the key to the “ON” position, BUT DO NOT START THE CAR!
- Leave the key in the “ON” position for 3 minutes WITHOUT TOUCHING ANYTHING.
- After 3 minutes, turn key to the “OFF” position, then start the car as normal.
What is code P2118 mean?
When the engine control module (ECM) detects out-of-range voltage or poor performance from the throttle actuator control motor, the P2118 code is set along with a Check Engine Light on the dashboard. When the P2118 code is set, it also triggers a failsafe mode to prevent damage to the vehicle.
What does the p0638 code on a VW mean?
P0638 VOLKSWAGEN Meaning The Powertrain Control Module (PCM) compares the actual Throttle Possition (TP) with the target TP when the engine is running. If the difference is more than the specification, the PCM determines that there is a throttle actuator control circuit range/performance problem.
What does p0638 mean on a throttle actuator?
OBD II fault code P0638 is a generic code that is defined as “Throttle actuator control, Bank 1 -range/performance problem”, and is set when the PCM (Powertrain Control Module) detects a problem with the operation of the throttle control actuator on drive-by-wire systems. In this definition, “range/performance problem” refers to
Is p0638 the only code that a generic code reader can display?
The nett result of this is that in some cases, code P0638 may be the only code a generic code reader can display, when in fact, there may be other CAN system related codes present that cannot be displayed.
How does the PCM/ECM set the DTC p0638?
The PCM/ECM uses the throttle position sensor (TPS) to monitor the actual throttle blade position and when the actual position is out of range with the target position, the PCM/ECM will set the DTC P0638. Bank 1 refers to the side of the engine with cylinder number one, however most vehicles use one throttle body for all cylinders.
