For the pintle hook, make sure it's securely mounted, make sure it's operational, make sure there's no signs of cracking or anything else compromising the integrity of it.
The congear won't be so much different from a trailer pre-trip inspection... check the tires, brakes, lights, air lines, glad hands and glad hand seals, pigtail connection, inspect for any damage to the frame, tongue, and clevice.
tires, wheels, lights reflectors, etc. pintle hook, make sure it is not bent broken or missing and secured to the trailer properly.
what should you check for when inspecting the coverter dolly?
were should you hook coverter dollys an not hook them
Make sure spare tire is secured, if it has one. Make sure safety chains are secured to trailers and make sure converter doily air tank drain valve is closed
Regardless of how many axles it has, you need to first check to see what the manufacturer's recommendation is for mounting a pintle hitch. Drill into the wrong part of the frame, and you'll create a weak point which will eventually cost you in repairs.
It's like any other pre-trip... check your tires, make sure they're inflated, make sure they're not damaged, make sure they're at legal tread depth (2/32nds minimum, just like a trailer), ensure all bolts are present and intact where the fifth wheel mounts onto the congear, make sure the locking jaws aren't worn and are properly adjusted, ensure your brakes are adjusted and you have adequate thickness in the brake shoes (4/32nds minimum at the center for a two piece shoe), ensure there's no damage to the congear frame, ensure you're have oil in the hubs and it's not leaking out, ensure your safety chains are intact and serviceable, ensure the clevice isn't damaged, ensure the pintle is operational and undamaged, ensure you have the locking pin for the pintle, ensure your glad hand seals are intact and serviceable, ensure your air lines to your congear are undamaged and won't hang in a manner such as to have them hanging too close to the roadway or laying on the congear deck.
Replace the drink tube assembly
PO1406 ERG valve pintle position circuit error.
Replace the drink tube assembly
replace the drink tube assembly
first check for battery voltage to the valve by probing the wires of the electrical connector with a volt-meter it should be about 10.5 volts if not it's probably bad.next remove the valve and check the pintle inside the valve ports for excessive carbon deposits clean the valve ports and pintle with carburetor cleaner and replace the valve if idle does not improve replace the isc valve with a new one.
replace the drink tube assembly
Excess fuel could be one reason. The check engine light should be illuminated. Check the codes and re-post results.