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P0638 Diagnostic Trouble Code Discussion for October 2008

Throttle Actuator Control Range/Performance

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Trouble Ticket Help Requests for DTC P0638
Help Request Posted
2000 Volkswagen Jetta GL 2.0L Cuts out, MIL Lamp on VIN: WVWSK61J61
P0638: throttle actuator cont range performance B1. ... off. scan and found the following codes listed below. replace the cam & crank sensor. Clear code but check engine light comes on right away. Scan for codes, none found but P0725 (engine speed sensor ckt malfunction) is in pending code. Cant seem to loc...
October 06, 2008