Skip the auto shop - Our mechanics make house calls

Q: OBD II monitor not ready

asked by on

The OBD II monitor has not been ready for 3,000 miles. I am not sure what is wrong, but I think it might be a sensor.

A: Hi! Your BMW has a timing element for certa...

Hi! Your BMW has a timing element for certain functions on the Engine Control Module that can be read by the OBD II scanner. BMW has their own special scanner that resets certain things like oil change, emission inspection, and other items depending on the accessories installed. Other items should still be readable both with the engine off, and also while driving. If you have no readings at all, it is advisable to take your BMW to a qualified technician to diagnose the problems surrounding your Engine Control Module. Be sure to tell them that there is no OBD II readout when you book your appointment.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Steering wheel vibration at high speeds

Hi there. A high speed shake is either caused by an imbalance issue with the tires and wheels or it can be a problem with worn out front end parts or warped hubs. I usually start diagnosing this by road...

Q: Hey Robert my car today shut off unexpectedly, as u pulled in to the dealer where I bought it ironically. I read something in re

Intermittent, sudden loss of power is due to an electrical or fuel issue. A few years back, this problem was traced to a fuel system issue in certain BMW models, but reportedly not the 650i. I would first check to...

Q: Is it possible to install my broken serpentine belt back my car?

Hi, thanks for writing in. I'm a little confused by your question. If you're asking whether it's possible to install a broken serpentine belt on a vehicle and drive 20 miles, I'd say not. If the belt is physically broken,...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.