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U1804 Engine Trouble Code

Meaning of U1804 engine trouble code is a kind of network trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

U1804 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for U1804 code is occuring now you should check U1804 repair processes.
Now don't ask yourself; What should you do with U1804 code ?
The solution is here :

U1804 Possible Solution:

Gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. If the plug wires are out of sequence, the explosion occurs at the wrong time. The improper timing of the explosion sometimes pushes the cylinder the wrong direction or interferes with the turning of the crank. As a result, the engine stutters or backfires, if it runs at all.

U1804 Code Meaning :

U	1	8	0	4
OBD-II Diagnostic Network (U) Trouble Code For Engine	Fuel And Air Metering	Engine Oil Temperature Sensor Malfunction	Cold Start Injector 1 Malfunction	Timing Reference High Resolution Signal A Too Many Pulses

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

U1804 OBD-II Diagnostic Network (U) Trouble Code Description

U1804 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Main reason For U1804 Code

The reason of U1804 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

U1804 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

	Example: 0140