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U1794 Engine Trouble Code

Meaning of U1794 engine trouble code is : U1794 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

U1794 Possible Solution:

U1794 Engine

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

U1794 Code Meaning :

U 1 7 9 4
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Fuel Rail Pressure Sensor Circuit Malfunction Crankshaft Position Sensor A Circuit Malfunction Timing Reference High Resolution Signal A Too Many Pulses

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

U1794 OBD-II Diagnostic Network (U) Trouble Code Description

U1794 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Reason For U1794 Code

The reason of U1794 OBD-II Engine Trouble Code is Fuel Rail Pressure Sensor Circuit Malfunction.

Parts or components should not be replaced with reference to only a U1794 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.