What does code P1638 mean on BMW vehicles?
The ECU detects that the throttle valve is temporarily sticking during operation.
OBD-II Code BMW
P1638 — BMW — Throttle Valve Position Control; Throttle Stuck Temporarily
The ECU detects that the throttle valve is temporarily sticking during operation.
Common symptoms
- Hesitation
- jerking
Possible causes
- Mechanical contamination
- carbon buildup
Initial recommendation
Clean throttle body thoroughly and check for mechanical binding.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine BMW code P1638 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands