Q: Check engine light on and recurring P0455

asked by on

First, the Check Engine light came on and it was a recurring engine code P0455 (Evaporative Emission Control System Leak Detected). When driving back home, my car wouldn’t stay in gear. When not catching, it would only rev and I couldn’t get it to shift into Drive or Reverse. The only way I could get it to shift into gear was to turn off the car and then turn it back on. I barely made it home. A bit more info for you: two months ago, the fluid was changed. At present, the fluid smells like burning fluid and it is a dark color. Can you please explain the problem to me and tell me what to do?

Hi there. The P0455 code that you are getting in the computer is a different issue than the transmission. Most of the time it is caused by a bad gas cap or a leak in the system. If the gas cap is fine, then a smoke test would need to be done to locate the leak.

As for the transmission issue, it sounds like the transmission is failing. If the fluid was changed recently, they should have reset the computer for the new fluid. That can affect the way that the transmission shifts. If the fluid is already really dark and smells burnt, then you will more than likely need to have the transmission rebuilt. You would need a transmission specialist for this.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Check engine light on and recurring P0455

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: Advice on what type of service to do on a car before a road trip

My advice is to stick to one type of oil. In my old cars, I've been using Castrol GTX forever. It's normal and it's not synthetic. I've never had a problem with it, they don't burn out oil and they...

Q: Q: Smell coming from A/C vents

Hello there, a few different items can cause this type of smell in the vehicle. The most common is the heater core, but that has already been checked. Other likely causes would be an exhaust leak, fuel leak, or something...

Q: Cooling fan is always on - 2002 Mercedes Benz SLK320

Hello. Though there are a lot of possible causes of this, the most common is a relay issue. If the relay for the fan is failing, then this will occur. It may also be something, such as a short in...

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...
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...