CAR OBD CODES

P0638 OBD Code Definition:
P0638 Throttle Actuator Control Range/Performance
P0638 OBD Code Description:

OBD2 Code P0638 Definition:
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. Symptoms

Possible sumptoms of P0638
– Engine Light ON (or Service Engine Soon Warning Light) Possible Causes

Possible causes of P0638
– Drive-by-wire control system malfunction – Throttle actuator malfunction – Throttle valve malfunction – PCM malfunction Possible Solutions

Note: The information on the P0638 error code is purely informative, if you need more useful information, please consult your technician.