Skip the auto shop - Our mechanics make house calls

Q: Check engine light and dash lights intermittently on

asked by on

A couple weeks ago, I had my engine oil, transmission, brake fluid, and differential oil changed. The day of the service, I felt my car shaking. The mechanics looked it over, but told me they didn't see anything wrong. The shaking problem stopped for the last two weeks, but then today, I noticed that my transmission didn't seem to be shifting. I was going about 25 mph. The tachometer went all the way up to 4,000-5,000 rpms when I accelerated. The check engine light, VSC light, and 4WD/TRAC lights came on intermittently, would stay on for a couple seconds, then go off for one or two minutes. I pulled over, but when I started moving again, the problem disappeared. This morning, I took my car back to the mechanic, and they pulled a U0131 code. The mechanic recommended I take my car back to the dealership for some sort of calibration. If the lights only came on one day, and haven't been on since, do I need to do this? What might cause that kind of problem?

The U0131 code is for a loss of communication with a module and it may be a computer issue that caused the problems you’ve had. This may be why it went away when you restarted. These types of issues may be an intermittent problem that may need extensive pinpoint testing or a problem with the connections at one or more modules.

Since the code is specifically for a body control module communication error, and most if not all generic scanners cannot access this module, I recommend having the dealer scan the system to test and check if they can locate the module problem. If you want a second opinion on this, reach out to a certified mechanic who can diagnose your shaking and shifting issue.

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. Check engine light and dash lights intermittently on

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: Car misfires

One thing comes to mind with your car. There is a bulletin to solve a problem with fuel injector primary circuit codes. P0351-P0356. This may or may not repair the misfire, but it will prevent the false codes. If this...

Q: missing catalytic converter.

A catalytic converter is a major component to your car's exhaust system. If this is truly missing, this would mean that someone would have had to have physically removed it which involves a fair amount of work as well as...

Q: Replaced blower motor resistor on a 06 honda accord 4.2l. Only blows on high regardless of what speed I set it on

Hi there. Assuming the original problem was no blower motor speeds at all, leads me to believe that the replacement blower resistor may be your issue. High blower motor relay stuck closed would of given you high speed only, prior...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...