Honda odyssey goes into limp mode but corrects upon restarting the engine

have vehicle scanned for reason it went into limp mode and shut down

run the fault codes first to find the area for the intermittent failure.

is it a petrol or a diesel ?

Your car goes in "limp mode"!!!
After scan the EDC-15P engine control unit with a VAG or KTS -BOSCH diagnosis tool you will find this: Fault code: P1557-Turbo Boost pressure control exceeded
1. Engine stopped and ignition switch off. Check all pneumatic connections and hoses between turbocharger actuator = pressure unit for boost-pressure control, boost-pressure control solenoid valve, vacuum reservoir, EGR control solenoid valve, intake-manifold flap solenoid valve, EGR valve with throttle - part of intake manifold. Also the vacuum connection between tandem pump and brake booster. If you find something wrong replace parts. If not go to step 2.
2. Extract the hose of the turbocharger actuator = pressure unit for boost-pressure control part of turbocharger. Instead of the original hose you must place another 1 meter long hose with the same inside diameter, and then you check to inspire yourself the air from the other one extremity of this hose. The mechanical connecting rod of the turbocharger actuator must have a smooth and whole motion. If you can do that with your mouth, then you must replace the boost-pressure control solenoid valve. If you can not reach this with your mouth, then you go to step 3.
3. This is the most difficult work. The problem is that the soot particles deposits inside the turbocharger plugging the variable nozzle geometry mechanism = adjustable vanes of the turbine. If the turbocharger actuator is not able to adjust the turbine vanes the charge air pressure increases too much and ECU (engine control unit) goes in "limp mode" = engine protection software. As a result the "limp mode" engine still running until you turn the engine off (ignition switch off) and back on when the "limp mode" is deactivated, but the fault still remains in ECU memory!
4. You must be able to extract the turbo from the engine and then to disassemble the turbocharger, clean inside adjustable vanes mechanism and refit all.

overheating or going into limp mode....restart just resets the pcm

Please describe limp mode. [email protected] Is the transmission effected, or engine performance. how long has the check engine light been on. And do you have starting issues during cold start. Ooh does this model have a ureurea system in it? An addtive to clean the catalytic system which needs to be service once a year...

its sounds like a sensor problem or a obtm sensor problem check with your local dealer to find out

Any time the transmission goes into the limp mode, it generates an error code that tells what caused it to go into limp mode. It could be something as simple as a loose connection on a sensor for the transmission computer. The code would explain which sensor was sending the correct signal.
By restarting the car you are resetting the transmission computer, clearing the limp condition.

What is limp mode, and it is MiL light( mal function indicator light)it is not EML. Please specify so i can help

The symptoms you describe, "limp mode", no check engine light, after a restart you get a temporary cure, and the year of your vehicle, tell me your catalytic converter is becoming clogged.

As your vehicle warms, the exhaust pressure builds and can't properly escape through the catalytic converter. When you turn the vehicle off, the pressure slowly releases, and when restarted it will run ok again until the pressure builds.

I would replace the catalytic converter, and that should resolve your issue.

I hope this information helps you, and I wish you luck on your repair.