Code
P0638
Throttle
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Most likely causes
- موتور تالف
- خانق متسخ
Symptoms you may notice
- Check engine light
- Limp mode
- Poor throttle response
Checks to run
- Clean the throttle body
- Read the throttle angle live
- Test the actuator
Tools you may need
Throttle cleaner
OBD-II scanner
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.