BMW P1629: Throttle Valve Adaptation Spring Test Stop, Spring Does Not Open (Bank 1)
Is your scanner showing BMW P1629?
No worries. We'll show you what it means and how to deal with it.
BMW P1629: Throttle Valve Adaptation Spring Test Stop, Spring Does Not Open (Bank 1)
OVERVIEWWhat Does The BMW P1629 Code Mean?
During the spring test the diagnostic function monitors the throttle valve to determine whether it returns to the
emergency-air position within the specified period when no voltage is being applied.
The fault is recognized when the throttle valve does not return to an aperture of more than 7.4% within 560 ms
when voltage is not being applied to the unit.
What Are The Potential Causes Of The BMW P1629 Code?
Below are some potential causes of this DTC:
- Plate is sticking
- Defective return spring
- DVE electrical activation defective.
- DVE motor wiring may have shorted
- Throttle valve is contaminated with foreign objects
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> 13547502444 Throttle Body Compatible with BMW 325i 325Ci 325xi 525i X3 Z3 Z4
>>> Throttle Return Spring Kit Carburetor Spring Classification Governor Connecting Rod Speed Control Spring Adjusting Lever Spring
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
ENGINE PERFORMANCE Self Diagnosis for P1629 – 2011 BMW 535xi, pages 142-144.
