Skip the auto shop - Our mechanics make house calls

Q: Engine went into "limp home mode with power train fault wrench indicated in dash. It will not accelerate. Not pulling any load.

asked by on

Car lost acceleration. Power train wrench appeared. Engine is on and limps along. Not drivable.

My car has 59000 miles.
My car has an automatic transmission.

Hi there. Your vehicle’s wrench light, Check Engine Light and lack of performance go hand in hand. The vehicle’s PCM (powertrain control module) has recognized a fault and put the vehicle into limp home mode. It could be, a throttle actuator problem or APP (accelerator pedal position sensor) problem. Accessing the vehicle’s computer for trouble codes may help identify the area of concern. It could be a fuel delivery or ignition system fault. There are a variety of component failures that could cause your vehicle’s drivability issue. I recommend having your vehicle’s lost of acceleration be diagnosed and repaired by a certified technician from YourMechanic.

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!
  • Home
  • Questions
  • Engine went into "limp home mode with power train fault wrench indicated in dash. It will not accelerate. Not pulling any load.

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: I was wondering if you could tell me what happens when the camshaft gears get stuck?

Hi and thanks for contacting YourMechanic. Lock camshaft gears will not turn the camshaft and cause the timing belt or chain to break. This is not your issue. What could be happening is the Throttle Position Sensor (TPS) or Idle...

Q: Slight jerking when driving and sputtering going up hills.

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...

Q: Engine overheating.

Hello. Engine overheating can be caused by a wide variety of issues. I would start by checking the vehicle's coolant level to make sure that it has not run low as this is one of the most common causes of...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...