Skip the auto shop - Our mechanics make house calls

Q: Lost communication with the tcm

asked by on

The transmission is stuck in second gear dtc code is lost communication with the tcm. Traction control light is on air bag squib curcuit fault. And lost communication wit right front vehicle satellite speed sensor. I think all are connected cause all happened at same time. What are your thoughts? Any help is greatly appreciated.

My car has 114300 miles.
My car has an automatic transmission.

Depending on whether or not you have made any modifications to your car (i.e. aftermarket tune, other performance upgrades, etc), this may be a problem with the main power-train control module (PCM) not communicating with the transmission control module (TCM). Many Chryslers are known for this kind of problem, particularly after making any aftermarket modifications that affect the electronics of the vehicle. I would recommend having an expert from Your Mechanic come to your home or place of business to perform a service light is on inspection and diagnose this issue using a scan tool, which will provide more insight as to the specific problem.

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!
  1. Home
  2. Questions
  3. Lost communication with the tcm

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: Rumbling sound from rear of vehicle

There can be multiple causes when dealing with a roaring or rumbling sound. A wheel bearing can cause a rumbling sound. When it comes to a rear end or differential it is important that all of the correct shims have...

Q: installed new throttle body and drove car for about 5 miles and the lightning bolt indicator came on again.

The pcm - powertrain control module - should have "learned" after driving, that there was a new throttle body in place and corrected itself. If the light is back on and the same code for throttle body / throttle position...

Q: Just brought 1996 chevy suburban. Noticed a leak in coolant system 2 days ago kept water in it.

Overheating can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.