Q: OBD code P1399

asked by on

The Check Engine light is on and has an OBD code P1399. Is this an issue with the valves?

On Honda vehicles the OBD code p1399 indicates that there is a random misfire occurring in the engine. In most cases a valve adjustment will correct this issue, however a blocked passage in the EGR (Exhaust Gas Recirculation) system can also generate this same code. Valve adjustments should be performed on Honda vehicles every 50,000 miles. Finding a blockage in the EGR system is not uncommon to find either. Both of these services are fairly straight forward and considered routine maintenance on your Honda Pilot. I would recommend enlisting the assistance of a certified mechanic to come by and inspect your Honda’s misfiring issue. They will have the tools and experience needed to perform a valve adjustment as well as check the EGR passages for any blockage and clean it if necessary. They will also be able to give your car a thorough inspection and inform you if any other systems on your Honda need attention as well.

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. OBD code P1399

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: Why does my car automatically slow from 70 mph to 60 mph on its own 2003 Honda Element

Hi there. This can be caused by a number of things. I would first check to see if the check engine light is on and if there are any codes in the system. If there are any codes then it...

Q: Knocking feeling from the foot rest area.

Hi there. Sounds like a motor or transmission mount is loose and as your vehicle is going over bumps, the motor mount or transmission mount is banging on the sub-frame transferring the motion to the floor board of the vehicle....

Q: Q: Steering wheel shakes

Hi. A severely worn hub bearing would be my guess. Hub bearings are sealed bearings. Over time, they wear and fail. Hub bearing noises tend to change during right and left turns as pressure is increased or decreased. Eventually, the...

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...
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.