DTC P0638: Throttle Jacking Unit, Position Error-Signal Implausible: Diagnosis/Troubleshooting

Fig 1: P0638 Work Instruction (Step 1 Through 5)

Courtesy of PORSCHE OF NORTH AMERICA, INC.

Remove connector of throttle part. See Fig 2 .

Fig 2: Locating Throttle Connector

Courtesy of PORSCHE OF NORTH AMERICA, INC.

Fig 3: P0638 Work Instruction (Step 6 Through 8)

Courtesy of PORSCHE OF NORTH AMERICA, INC.