My 2006 Mercedes ML500 has recently displayed fault code P0730 following a front wheel bearing replacement. The vehicle's ABS and ESP warning lights are now illuminated. I've checked the diagnostic readings, and while the issue arose after the bearing work, it is unclear whether this is directly related to the repair or another underlying system problem.
I replaced both the driver-side wheel speed sensor and brake sensor during maintenance. The P0730 code persists. After researching Mercedes service documentation, I believe the issue might be low transmission fluid or a required transmission flush. I'm hoping it's one of these two solutions.
I identified the root cause: during installation, someone damaged the internal sensor components, causing inaccurate readings. Additionally, the black strip on the bearing was installed incorrectly. After correcting both issues today, the ABS/ESP lights have turned off.
Great to hear you found a solution! Sharing your experience helps others facing similar problems with their 2006 Mercedes ML500 and P0730 code. Thanks for the detailed update.
Could the Vehicle Speed Sensor (VSS) or its associated circuit be faulty? This is a common cause of P0730 in Mercedes ML500 models.