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Code

P0638

Throttle

Papillon électronique — plage / performance

Le papillon n’a pas atteint la position demandée.

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Most likely causes

Papillon encrassé
Moteur de papillon

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.

Related codes in Throttle

Défaut circuit capteur de position papillon

Capteur de position papillon — plage / performance

Défaut capteur de position papillon B

Moteur de papillon — plage / performance

Capteur de pédale D — signal bas

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