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Mercedes Benz
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2001
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SLK 230 (170.449) L4-2.3L SC (111.983)
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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P Code Charts
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P0638
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[4] M16/6 (Throttle Valve Actuator): M16/6 (Throttle Valve Actuator), PWM Signal Switched Off
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Test 2: Check Component M16/6 (Throttle Valve Actuator)
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Test 2B: Default Initialization
Test 2B: Default Initialization
Default initialization
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Communication with ECU required